Drought-tolerant plants
These plants have low water needs and moderate to high drought tolerance once established. Even drought-tolerant plants need regular water in their first season while the roots grow.
587 plants:
- Adam's needle (yucca) Yucca filamentosa · hardy to -34 °C (-29 °F)
- African baobab Adansonia digitata · hardy to 0 °C (32 °F)
- African flag (chasmanthe) Chasmanthe floribunda · hardy to -4 °C (25 °F)
- African iris Dietes grandiflora · hardy to -5 °C (23 °F)
- African moringa (cabbage tree, shiferaw) Moringa stenopetala · hardy to 3 °C (37 °F)
- African wormwood (wilde-als, umhlonyane) Artemisia afra · hardy to -8 °C (18 °F)
- Agapanthus Agapanthus praecox · hardy to -5 °C (23 °F)
- Agrimony (church steeples) Agrimonia eupatoria · hardy to -30 °C (-22 °F)
- Air plant (blushing tillandsia) Tillandsia ionantha · hardy to 5 °C (41 °F)
- Ajwain (carom) Trachyspermum ammi · hardy to 0 °C (32 °F)
- Aleppo pine Pinus halepensis · hardy to -15 °C (5 °F)
- Alfalfa (lucerne) Medicago sativa · hardy to -30 °C (-22 °F)
- Algerian iris (winter iris) Iris unguicularis · hardy to -15 °C (5 °F)
- Almond Prunus dulcis · hardy to -18 °C (0 °F)
- Aloe vera Aloe vera · hardy to -1 °C (30 °F)
- Amla (Indian gooseberry) Phyllanthus emblica · hardy to -1 °C (30 °F)
- Anise (aniseed) Pimpinella anisum · hardy to -2 °C (28 °F)
- Anise hyssop Agastache foeniculum · hardy to -35 °C (-31 °F)
- Apple-ring acacia (winter thorn, ana tree) Faidherbia albida · hardy to -2 °C (28 °F)
- Apricot Prunus armeniaca · hardy to -29 °C (-20 °F)
- Arctic poppy Papaver radicatum · hardy to -50 °C (-58 °F)
- Argan tree Sideroxylon spinosum · hardy to -3 °C (27 °F)
- Ashwagandha (winter cherry) Withania somnifera · hardy to 2 °C (36 °F)
- Athel tamarisk Tamarix aphylla · hardy to -7 °C (19 °F)
- Atlas cedar Cedrus atlantica · hardy to -20 °C (-4 °F)
- Aubrieta Aubrieta deltoidea · hardy to -30 °C (-22 °F)
- Baby rubber plant (blunt-leaved peperomia) Peperomia obtusifolia · hardy to 10 °C (50 °F)
- Bael (stone apple) Aegle marmelos · hardy to -7 °C (19 °F)
- Bambara groundnut Vigna subterranea · hardy to 15 °C (59 °F)
- Barley Hordeum vulgare · hardy to -15 °C (5 °F)
- Baseball plant (living baseball) Euphorbia obesa · hardy to 2 °C (36 °F)
- Basket of gold (golden alyssum) Aurinia saxatilis · hardy to -32 °C (-26 °F)
- Bay laurel Laurus nobilis · hardy to -12 °C (10 °F)
- Beach she-oak (coast she-oak, Australian pine) Casuarina equisetifolia · hardy to -2 °C (28 °F)
- Beaked yucca Yucca rostrata · hardy to -20 °C (-4 °F)
- Bearded iris Iris germanica · hardy to -30 °C (-22 °F)
- Big bluestem Andropogon gerardii · hardy to -37 °C (-35 °F)
- Big sagebrush Artemisia tridentata · hardy to -35 °C (-31 °F)
- Bishop’s cap cactus Astrophytum myriostigma · hardy to -2 °C (28 °F)
- Biting stonecrop (goldmoss) Sedum acre · hardy to -35 °C (-31 °F)
- Bitter aloe (Cape aloe) Aloe ferox · hardy to -4 °C (25 °F)
- Blackberry lily (leopard lily, shaga) Iris domestica · hardy to -26 °C (-15 °F)
- Black cumin (nigella seed) Nigella sativa · hardy to -3 °C (27 °F)
- Black-eyed Susan Rudbeckia hirta · hardy to -30 °C (-22 °F)
- Black mustard Brassica nigra · hardy to -5 °C (23 °F)
- Blanket flower Gaillardia x grandiflora · hardy to -34 °C (-29 °F)
- Blue agave (tequila agave) Agave tequilana · hardy to -4 °C (25 °F)
- Blue blossom (California lilac) Ceanothus thyrsiflorus · hardy to -10 °C (14 °F)
- Blue candle cactus (bilberry cactus, garambullo) Myrtillocactus geometrizans · hardy to -3 °C (27 °F)
- Blue false indigo Baptisia australis · hardy to -38 °C (-36 °F)
- Blue fescue Festuca glauca · hardy to -34 °C (-29 °F)
- Blue flax lily (paroo lily) Dianella caerulea · hardy to -5 °C (23 °F)
- Blue grama (eyelash grass) Bouteloua gracilis · hardy to -38 °C (-36 °F)
- Blue leschenaultia Lechenaultia biloba · hardy to -2 °C (28 °F)
- Blue marguerite (blue daisy) Felicia amelloides · hardy to -3 °C (27 °F)
- Blue palo verde Parkinsonia florida · hardy to -9 °C (16 °F)
- Boldo Peumus boldus · hardy to -7 °C (19 °F)
- Borage Borago officinalis · hardy to -3 °C (27 °F)
- Bottle palm Hyophorbe lagenicaulis · hardy to 2 °C (36 °F)
- Bougainvillea Bougainvillea glabra · hardy to 0 °C (32 °F)
- Boxwood Buxus sempervirens · hardy to -25 °C (-13 °F)
- Brittlebush Encelia farinosa · hardy to -5 °C (23 °F)
- Bunny ears cactus (polka-dot cactus) Opuntia microdasys · hardy to -3 °C (27 °F)
- Burma padauk (pradu) Pterocarpus macrocarpus · hardy to 3 °C (37 °F)
- Burn jelly plant (stalked bulbine) Bulbine frutescens · hardy to -5 °C (23 °F)
- Bur oak Quercus macrocarpa · hardy to -40 °C (-40 °F)
- Burrawang (cycad) Macrozamia communis · hardy to -4 °C (25 °F)
- Burro’s tail (donkey’s tail) Sedum morganianum · hardy to 2 °C (36 °F)
- Bush anemone (tree anemone) Carpenteria californica · hardy to -12 °C (10 °F)
- Bush poppy (tree poppy) Dendromecon rigida · hardy to -9 °C (16 °F)
- Butterfly agave (papalomé, tobalá) Agave potatorum · hardy to -3 °C (27 °F)
- Butterfly bush Buddleja davidii · hardy to -23 °C (-9 °F)
- Butterfly mariposa lily Calochortus venustus · hardy to -10 °C (14 °F)
- Butterfly weed Asclepias tuberosa · hardy to -34 °C (-29 °F)
- Cabbage tree (cordyline) Cordyline australis · hardy to -8 °C (18 °F)
- Calafate (box-leaved barberry) Berberis microphylla · hardy to -25 °C (-13 °F)
- California buckeye Aesculus californica · hardy to -12 °C (10 °F)
- California buckwheat Eriogonum fasciculatum · hardy to -10 °C (14 °F)
- California flannelbush (fremontia) Fremontodendron californicum · hardy to -10 °C (14 °F)
- California fuchsia (hummingbird trumpet) Epilobium canum · hardy to -15 °C (5 °F)
- California poppy Eschscholzia californica · hardy to -7 °C (19 °F)
- Canary Island date palm Phoenix canariensis · hardy to -9 °C (16 °F)
- Canary Island pine Pinus canariensis · hardy to -8 °C (18 °F)
- Canary Islands dragon tree Dracaena draco · hardy to 0 °C (32 °F)
- Candelabra tree (naboom) Euphorbia ingens · hardy to -3 °C (27 °F)
- Cañihua Chenopodium pallidicaule · hardy to -8 °C (18 °F)
- Cape daisy (osteospermum) Dimorphotheca ecklonis · hardy to -5 °C (23 °F)
- Caper bush Capparis spinosa · hardy to -8 °C (18 °F)
- Cardboard palm Zamia furfuracea · hardy to -3 °C (27 °F)
- Carob Ceratonia siliqua · hardy to -5 °C (23 °F)
- Cashew Anacardium occidentale · hardy to 5 °C (41 °F)
- Cassava Manihot esculenta · hardy to 2 °C (36 °F)
- Cast-iron plant (haran) Aspidistra elatior · hardy to -12 °C (10 °F)
- Catmint Nepeta x faassenii · hardy to -34 °C (-29 °F)
- Catnip Nepeta cataria · hardy to -34 °C (-29 °F)
- Cedar of Lebanon Cedrus libani · hardy to -25 °C (-13 °F)
- Century plant (agave) Agave americana · hardy to -9 °C (16 °F)
- Cheddar pink Dianthus gratianopolitanus · hardy to -32 °C (-26 °F)
- Chia Salvia hispanica · hardy to 0 °C (32 °F)
- Chickpea Cicer arietinum · hardy to -5 °C (23 °F)
- Chilean puya Puya chilensis · hardy to -5 °C (23 °F)
- Chilean wine palm Jubaea chilensis · hardy to -12 °C (10 °F)
- Chinaberry (Persian lilac) Melia azedarach · hardy to -12 °C (10 °F)
- China pink Dianthus chinensis · hardy to -30 °C (-22 °F)
- Chin cactus (grafted “moon cactus”) Gymnocalycium mihanovichii · hardy to 4 °C (39 °F)
- Chinese juniper Juniperus chinensis · hardy to -34 °C (-29 °F)
- Chinese plumbago (Willmott’s blue leadwort) Ceratostigma willmottianum · hardy to -18 °C (0 °F)
- Chinese red pine Pinus tabuliformis · hardy to -35 °C (-31 °F)
- Christ’s thorn jujube (sidr) Ziziphus spina-christi · hardy to -3 °C (27 °F)
- Cider gum (eucalyptus) Eucalyptus gunnii · hardy to -20 °C (-4 °F)
- Claret cup cactus (kingcup cactus) Echinocereus triglochidiatus · hardy to -28 °C (-18 °F)
- Clary sage Salvia sclarea · hardy to -20 °C (-4 °F)
- Cleveland sage Salvia clevelandii · hardy to -9 °C (16 °F)
- Cluster bean (guar) Cyamopsis tetragonoloba · hardy to 12 °C (54 °F)
- Coastal rosemary Westringia fruticosa · hardy to -5 °C (23 °F)
- Coast banksia Banksia integrifolia · hardy to -3 °C (27 °F)
- Coast live oak Quercus agrifolia · hardy to -9 °C (16 °F)
- Cobweb houseleek Sempervivum arachnoideum · hardy to -30 °C (-22 °F)
- Common coral tree (lucky-bean tree, umsinsi) Erythrina lysistemon · hardy to -3 °C (27 °F)
- Common fig Ficus carica · hardy to -10 °C (14 °F)
- Common hawthorn Crataegus monogyna · hardy to -28 °C (-18 °F)
- Common houseleek Sempervivum tectorum · hardy to -34 °C (-29 °F)
- Common ice plant (crystalline ice plant) Mesembryanthemum crystallinum · hardy to 0 °C (32 °F)
- Common juniper Juniperus communis · hardy to -45 °C (-49 °F)
- Common knapweed Centaurea nigra · hardy to -30 °C (-22 °F)
- Common lilac Syringa vulgaris · hardy to -35 °C (-31 °F)
- Common manzanita Arctostaphylos manzanita · hardy to -12 °C (10 °F)
- Common milkweed Asclepias syriaca · hardy to -38 °C (-36 °F)
- Common myrtle Myrtus communis · hardy to -10 °C (14 °F)
- Common ninebark Physocarpus opulifolius · hardy to -35 °C (-31 °F)
- Common privet Ligustrum vulgare · hardy to -25 °C (-13 °F)
- Common rock rose (sun rose) Helianthemum nummularium · hardy to -25 °C (-13 °F)
- Common rue Ruta graveolens · hardy to -29 °C (-20 °F)
- Common sage Salvia officinalis · hardy to -15 °C (5 °F)
- Common sugarbush Protea repens · hardy to -5 °C (23 °F)
- Compass plant Silphium laciniatum · hardy to -35 °C (-31 °F)
- Conehead thyme (za’atar farsi, Spanish oregano) Thymbra capitata · hardy to -7 °C (19 °F)
- Cootamundra wattle Acacia baileyana · hardy to -8 °C (18 °F)
- Coral aloe Aloe striata · hardy to -4 °C (25 °F)
- Cork oak Quercus suber · hardy to -10 °C (14 °F)
- Cornelian cherry Cornus mas · hardy to -32 °C (-26 °F)
- Cornflower Centaurea cyanus · hardy to -15 °C (5 °F)
- Cosmos Cosmos bipinnatus · hardy to 2 °C (36 °F)
- Costmary (alecost, bible leaf) Tanacetum balsamita · hardy to -30 °C (-22 °F)
- Cotton lavender Santolina chamaecyparissus · hardy to -15 °C (5 °F)
- Cowpea (black-eyed pea) Vigna unguiculata · hardy to 2 °C (36 °F)
- Creeping baby’s breath Gypsophila repens · hardy to -32 °C (-26 °F)
- Creeping boobialla Myoporum parvifolium · hardy to -6 °C (21 °F)
- Creeping juniper Juniperus horizontalis · hardy to -40 °C (-40 °F)
- Creeping thyme Thymus serpyllum · hardy to -30 °C (-22 °F)
- Creosote bush Larrea tridentata · hardy to -15 °C (5 °F)
- Crepe myrtle Lagerstroemia indica · hardy to -12 °C (10 °F)
- Crown flower (giant milkweed, dok rak) Calotropis gigantea · hardy to 2 °C (36 °F)
- Crown imperial Fritillaria imperialis · hardy to -29 °C (-20 °F)
- Crown of thorns Euphorbia milii · hardy to 2 °C (36 °F)
- Cuban oregano (Indian borage) Coleus amboinicus · hardy to 3 °C (37 °F)
- Cumin Cuminum cyminum · hardy to 0 °C (32 °F)
- Curry plant Helichrysum italicum · hardy to -12 °C (10 °F)
- Daffodil Narcissus pseudonarcissus · hardy to -30 °C (-22 °F)
- Dalmatian bellflower (wall bellflower) Campanula portenschlagiana · hardy to -30 °C (-22 °F)
- David's peach (mountain peach) Prunus davidiana · hardy to -30 °C (-22 °F)
- Deer grass Muhlenbergia rigens · hardy to -15 °C (5 °F)
- Desert date (soapberry tree, lalob) Balanites aegyptiaca · hardy to 0 °C (32 °F)
- Desert ironwood Olneya tesota · hardy to -6 °C (21 °F)
- Desert marigold Baileya multiradiata · hardy to -15 °C (5 °F)
- Desert rose Adenium obesum · hardy to 7 °C (45 °F)
- Desert spoon (sotol) Dasylirion wheeleri · hardy to -18 °C (0 °F)
- Desert willow Chilopsis linearis · hardy to -18 °C (0 °F)
- Devil’s claw (tufted horned rampion) Physoplexis comosa · hardy to -30 °C (-22 °F)
- Dittany of Crete (díktamo) Origanum dictamnus · hardy to -5 °C (23 °F)
- Dog rose Rosa canina · hardy to -34 °C (-29 °F)
- Douglas iris (Pacific Coast iris) Iris douglasiana · hardy to -15 °C (5 °F)
- Doum palm Hyphaene thebaica · hardy to 0 °C (32 °F)
- Dragon fruit (pitaya) Selenicereus undatus · hardy to 2 °C (36 °F)
- Dry-zone mahogany (Senegal mahogany, caïlcédrat) Khaya senegalensis · hardy to 2 °C (36 °F)
- Dusty miller (silver ragwort) Jacobaea maritima · hardy to -10 °C (14 °F)
- Dutch crocus Crocus vernus · hardy to -34 °C (-29 °F)
- Dwarf grassy bells (edraianthus) Edraianthus pumilio · hardy to -25 °C (-13 °F)
- Dwarf iris (netted iris) Iris reticulata · hardy to -30 °C (-22 °F)
- Dwarf mountain pine Pinus mugo · hardy to -40 °C (-40 °F)
- Dyer’s chamomile (golden marguerite) Cota tinctoria · hardy to -30 °C (-22 °F)
- Eastern cyclamen (spring cyclamen) Cyclamen coum · hardy to -25 °C (-13 °F)
- Eastern prickly pear (hardy prickly pear) Opuntia humifusa · hardy to -30 °C (-22 °F)
- Eastern red cedar Juniperus virginiana · hardy to -40 °C (-40 °F)
- Eastern red columbine Aquilegia canadensis · hardy to -38 °C (-36 °F)
- Edelweiss Leontopodium nivale subsp. alpinum · hardy to -34 °C (-29 °F)
- Egusi melon Citrullus mucosospermus · hardy to 15 °C (59 °F)
- Emerald ripple peperomia Peperomia caperata · hardy to 10 °C (50 °F)
- Encrusted saxifrage Saxifraga paniculata · hardy to -35 °C (-31 °F)
- Engelmann's prickly pear Opuntia engelmannii · hardy to -15 °C (5 °F)
- English holly Ilex aquifolium · hardy to -25 °C (-13 °F)
- English lavender Lavandula angustifolia · hardy to -15 °C (5 °F)
- English yew Taxus baccata · hardy to -28 °C (-18 °F)
- Epazote Dysphania ambrosioides · hardy to 0 °C (32 °F)
- European fan palm Chamaerops humilis · hardy to -12 °C (10 °F)
- European nettle tree Celtis australis · hardy to -20 °C (-4 °F)
- Fairy fan-flower (scaevola) Scaevola aemula · hardy to -2 °C (28 °F)
- Fairy foxglove Erinus alpinus · hardy to -25 °C (-13 °F)
- Fairy's thimble Campanula cochleariifolia · hardy to -35 °C (-31 °F)
- Fennel Foeniculum vulgare · hardy to -29 °C (-20 °F)
- Feverfew Tanacetum parthenium · hardy to -29 °C (-20 °F)
- Field poppy Papaver rhoeas · hardy to -10 °C (14 °F)
- Field scabious Knautia arvensis · hardy to -30 °C (-22 °F)
- Finger millet (ragi) Eleusine coracana · hardy to 8 °C (46 °F)
- Firecracker bush (bouvardia, trompetilla) Bouvardia ternifolia · hardy to -5 °C (23 °F)
- Fire heath Erica cerinthoides · hardy to -4 °C (25 °F)
- Firethorn (pyracantha) Pyracantha coccinea · hardy to -23 °C (-9 °F)
- Firewheel (Indian blanket) Gaillardia pulchella · hardy to 0 °C (32 °F)
- Fishhook barrel cactus Ferocactus wislizeni · hardy to -10 °C (14 °F)
- Flame of the forest (palash) Butea monosperma · hardy to 0 °C (32 °F)
- Flaming Katy (florist’s kalanchoe) Kalanchoe blossfeldiana · hardy to 5 °C (41 °F)
- Flannel flower Actinotus helianthi · hardy to -2 °C (28 °F)
- Flat sea holly Eryngium planum · hardy to -30 °C (-22 °F)
- Flowering currant (red-flowering currant) Ribes sanguineum · hardy to -25 °C (-13 °F)
- Fonio (white fonio, acha) Digitaria exilis · hardy to 8 °C (46 °F)
- Forsythia Forsythia x intermedia · hardy to -30 °C (-22 °F)
- Fountain butterfly bush (alternate-leaved buddleja) Buddleja alternifolia · hardy to -25 °C (-13 °F)
- Fountain grass Pennisetum alopecuroides · hardy to -25 °C (-13 °F)
- Foxtail agave (spineless century plant) Agave attenuata · hardy to -2 °C (28 °F)
- Frangipani (plumeria) Plumeria rubra · hardy to 2 °C (36 °F)
- French lavender Lavandula stoechas · hardy to -9 °C (16 °F)
- French marigold Tagetes patula · hardy to 2 °C (36 °F)
- French sorrel (buckler-leaf sorrel) Rumex scutatus · hardy to -25 °C (-13 °F)
- French tarragon Artemisia dracunculus · hardy to -20 °C (-4 °F)
- Garlic Allium sativum · hardy to -15 °C (5 °F)
- Garlic chives Allium tuberosum · hardy to -30 °C (-22 °F)
- Geraldton wax Chamelaucium uncinatum · hardy to -3 °C (27 °F)
- Geranium (Pelargonium) Pelargonium x hortorum · hardy to 2 °C (36 °F)
- German chamomile Matricaria chamomilla · hardy to -6 °C (21 °F)
- Ghost plant (mother-of-pearl plant) Graptopetalum paraguayense · hardy to -5 °C (23 °F)
- Giant carrion flower (starfish flower) Stapelia gigantea · hardy to 4 °C (39 °F)
- Giant chalk dudleya (Britton’s live-forever) Dudleya brittonii · hardy to -2 °C (28 °F)
- Giant feather grass (golden oats) Celtica gigantea · hardy to -18 °C (0 °F)
- Gliricidia (madre de cacao, mata ratón) Gliricidia sepium · hardy to 4 °C (39 °F)
- Globe amaranth Gomphrena globosa · hardy to 1 °C (34 °F)
- Globe thistle Echinops ritro · hardy to -30 °C (-22 °F)
- Goji (wolfberry) Lycium barbarum · hardy to -30 °C (-22 °F)
- Golden barrel cactus Echinocactus grusonii · hardy to -4 °C (25 °F)
- Golden clematis (orange-peel clematis) Clematis tangutica · hardy to -35 °C (-31 °F)
- Golden shower tree Cassia fistula · hardy to 1 °C (34 °F)
- Golden wattle Acacia pycnantha · hardy to -6 °C (21 °F)
- Gorse (furze) Ulex europaeus · hardy to -18 °C (0 °F)
- Grape hyacinth Muscari armeniacum · hardy to -34 °C (-29 °F)
- Grapevine Vitis vinifera · hardy to -15 °C (5 °F)
- Grass tree (balga) Xanthorrhoea preissii · hardy to -3 °C (27 °F)
- Greek mountain tea (tsai tou vounou) Sideritis scardica · hardy to -18 °C (0 °F)
- Greek strawberry tree Arbutus andrachne · hardy to -12 °C (10 °F)
- Green ixia (turquoise ixia) Ixia viridiflora · hardy to -2 °C (28 °F)
- Green santolina (holy flax) Santolina rosmarinifolia · hardy to -15 °C (5 °F)
- Grey-headed coneflower (yellow coneflower) Ratibida pinnata · hardy to -35 °C (-31 °F)
- Grey-leaved cistus Cistus albidus · hardy to -10 °C (14 °F)
- Grey-leaved euryops (resin bush) Euryops pectinatus · hardy to -4 °C (25 °F)
- Guernsey lily (nerine) Nerine bowdenii · hardy to -12 °C (10 °F)
- Gum arabic tree (hashab, kikwata) Senegalia senegal · hardy to 0 °C (32 °F)
- Gum rockrose Cistus ladanifer · hardy to -10 °C (14 °F)
- Gymea lily Doryanthes excelsa · hardy to -3 °C (27 °F)
- Hardy ice plant Delosperma cooperi · hardy to -23 °C (-9 °F)
- Harlequin flower Sparaxis tricolor · hardy to -3 °C (27 °F)
- Heart-leaved globe daisy Globularia cordifolia · hardy to -30 °C (-22 °F)
- Heath banksia Banksia ericifolia · hardy to -4 °C (25 °F)
- Heather (ling) Calluna vulgaris · hardy to -34 °C (-29 °F)
- Heavenly bamboo (nandina) Nandina domestica · hardy to -18 °C (0 °F)
- Henna Lawsonia inermis · hardy to 5 °C (41 °F)
- Himalayan indigo Indigofera heterantha · hardy to -20 °C (-4 °F)
- Hog plum (ma-kok, amra) Spondias pinnata · hardy to 2 °C (36 °F)
- Holm oak Quercus ilex · hardy to -15 °C (5 °F)
- Honey locust Gleditsia triacanthos · hardy to -34 °C (-29 °F)
- Hottentot fig (sour fig, ice plant) Carpobrotus edulis · hardy to -4 °C (25 °F)
- Huacatay (black mint) Tagetes minuta · hardy to 0 °C (32 °F)
- Hyacinth Hyacinthus orientalis · hardy to -34 °C (-29 °F)
- Hyssop Hyssopus officinalis · hardy to -29 °C (-20 °F)
- Indian coral tree Erythrina variegata · hardy to 2 °C (36 °F)
- Indian cork tree (tree jasmine, peep) Millingtonia hortensis · hardy to 2 °C (36 °F)
- Indiangrass Sorghastrum nutans · hardy to -38 °C (-36 °F)
- Indian jujube (ber, phutsa) Ziziphus mauritiana · hardy to -3 °C (27 °F)
- Indian sandalwood Santalum album · hardy to 0 °C (32 °F)
- Italian buckthorn (alaternus) Rhamnus alaternus · hardy to -12 °C (10 °F)
- Italian cypress Cupressus sempervirens · hardy to -15 °C (5 °F)
- Italian stone pine Pinus pinea · hardy to -12 °C (10 °F)
- Ivy-leaved cyclamen Cyclamen hederifolium · hardy to -20 °C (-4 °F)
- Jacaranda Jacaranda mimosifolia · hardy to -6 °C (21 °F)
- Jade plant Crassula ovata · hardy to -1 °C (30 °F)
- Jamaican cherry (calabura, takhop farang) Muntingia calabura · hardy to 3 °C (37 °F)
- Japanese barberry Berberis thunbergii · hardy to -30 °C (-22 °F)
- Japanese black pine Pinus thunbergii · hardy to -23 °C (-9 °F)
- Japanese mock orange (pittosporum) Pittosporum tobira · hardy to -10 °C (14 °F)
- Japanese red pine Pinus densiflora · hardy to -30 °C (-22 °F)
- Japanese spindle (masaki) Euonymus japonicus · hardy to -18 °C (0 °F)
- Japanese white pine (goyōmatsu) Pinus parviflora · hardy to -29 °C (-20 °F)
- Jelly bean plant (pork and beans) Sedum rubrotinctum · hardy to -3 °C (27 °F)
- Jerusalem sage Phlomis fruticosa · hardy to -12 °C (10 °F)
- Jocote (red mombin, ciruela) Spondias purpurea · hardy to 0 °C (32 °F)
- Joshua tree Yucca brevifolia · hardy to -18 °C (0 °F)
- Judas tree Cercis siliquastrum · hardy to -18 °C (0 °F)
- Jujube Ziziphus jujuba · hardy to -23 °C (-9 °F)
- Kākābeak Clianthus puniceus · hardy to -5 °C (23 °F)
- Kakadu plum (gubinge, billygoat plum) Terminalia ferdinandiana · hardy to 5 °C (41 °F)
- Kangaroo paw Anigozanthos flavidus · hardy to -4 °C (25 °F)
- Karanda (Bengal currant, nam daeng) Carissa carandas · hardy to -1 °C (30 °F)
- Karoo cycad Encephalartos lehmannii · hardy to -5 °C (23 °F)
- Kei apple (umkokola) Dovyalis caffra · hardy to -5 °C (23 °F)
- Kermes oak Quercus coccifera · hardy to -15 °C (5 °F)
- Kersting’s groundnut (doyi) Macrotyloma geocarpum · hardy to 10 °C (50 °F)
- King of the Alps (alpine forget-me-not) Eritrichium nanum · hardy to -40 °C (-40 °F)
- King protea Protea cynaroides · hardy to -5 °C (23 °F)
- Korokio (wire-netting bush) Corokia cotoneaster · hardy to -12 °C (10 °F)
- Krantz aloe (candelabra aloe) Aloe arborescens · hardy to -3 °C (27 °F)
- Lablab (hyacinth bean, tua paep) Lablab purpureus · hardy to 3 °C (37 °F)
- Lacebark pine Pinus bungeana · hardy to -30 °C (-22 °F)
- Lady Banks’ rose (Banksian rose) Rosa banksiae · hardy to -10 °C (14 °F)
- Ladyfinger cactus (gold lace cactus) Mammillaria elongata · hardy to 0 °C (32 °F)
- Lady of the night orchid Brassavola nodosa · hardy to 10 °C (50 °F)
- Lamb's ear Stachys byzantina · hardy to -35 °C (-31 °F)
- Lanceleaf coreopsis (tickseed) Coreopsis lanceolata · hardy to -32 °C (-26 °F)
- Lantana Lantana camara · hardy to -3 °C (27 °F)
- Large-flowered tickseed (coreopsis) Coreopsis grandiflora · hardy to -32 °C (-26 °F)
- Late tulip (species tulip) Tulipa tarda · hardy to -32 °C (-26 °F)
- Laurustinus Viburnum tinus · hardy to -15 °C (5 °F)
- Lavandin Lavandula x intermedia · hardy to -20 °C (-4 °F)
- Leadplant Amorpha canescens · hardy to -40 °C (-40 °F)
- Lemon-scented gum Corymbia citriodora · hardy to -4 °C (25 °F)
- Lentil Lens culinaris · hardy to -8 °C (18 °F)
- Lion's tail (wild dagga) Leonotis leonurus · hardy to -6 °C (21 °F)
- Little bluestem Schizachyrium scoparium · hardy to -38 °C (-36 °F)
- Living stones (Leslie’s lithops) Lithops lesliei · hardy to -2 °C (28 °F)
- Love-in-a-mist Nigella damascena · hardy to -6 °C (21 °F)
- Love-lies-bleeding (kiwicha) Amaranthus caudatus · hardy to 2 °C (36 °F)
- Madagascar palm Pachypodium lamerei · hardy to 5 °C (41 °F)
- Madagascar periwinkle Catharanthus roseus · hardy to 1 °C (34 °F)
- Maʻo hau hele (Hawaiian yellow hibiscus) Hibiscus brackenridgei · hardy to 4 °C (39 °F)
- Maiden grass (miscanthus) Miscanthus sinensis · hardy to -30 °C (-22 °F)
- Maiden pink Dianthus deltoides · hardy to -35 °C (-31 °F)
- Mamoncillo (Spanish lime, quenepa) Melicoccus bijugatus · hardy to -2 °C (28 °F)
- Mango (dwarf) Mangifera indica · hardy to 1 °C (34 °F)
- Marama bean (gemsbok bean) Tylosema esculentum · hardy to -3 °C (27 °F)
- Marjoram Origanum majorana · hardy to 0 °C (32 °F)
- Marula Sclerocarya birrea · hardy to -2 °C (28 °F)
- Mastic tree (lentisk) Pistacia lentiscus · hardy to -8 °C (18 °F)
- Matilija poppy Romneya coulteri · hardy to -10 °C (14 °F)
- Maximilian sunflower Helianthus maximiliani · hardy to -35 °C (-31 °F)
- Mediterranean spurge Euphorbia characias · hardy to -12 °C (10 °F)
- Mexican bush sage Salvia leucantha · hardy to -7 °C (19 °F)
- Mexican feather grass Nassella tenuissima · hardy to -17 °C (1 °F)
- Mexican fleabane Erigeron karvinskianus · hardy to -12 °C (10 °F)
- Mexican giant cardón Pachycereus pringlei · hardy to -2 °C (28 °F)
- Mexican giant hyssop (toronjil morado) Agastache mexicana · hardy to -10 °C (14 °F)
- Mexican hat (prairie coneflower) Ratibida columnifera · hardy to -35 °C (-31 °F)
- Mexican marigold (Mexican tarragon) Tagetes lucida · hardy to -7 °C (19 °F)
- Mexican oregano Lippia graveolens · hardy to -4 °C (25 °F)
- Mexican snowball (echeveria) Echeveria elegans · hardy to -4 °C (25 °F)
- Mexican sunflower (tithonia) Tithonia rotundifolia · hardy to 0 °C (32 °F)
- Missouri evening primrose (bigfruit evening primrose) Oenothera macrocarpa · hardy to -32 °C (-26 °F)
- Mobola plum (hissing tree, muhacha) Parinari curatellifolia · hardy to -1 °C (30 °F)
- Monterey cypress Hesperocyparis macrocarpa · hardy to -12 °C (10 °F)
- Montpellier rock rose (narrow-leaved cistus) Cistus monspeliensis · hardy to -10 °C (14 °F)
- Moonstones (sugared almond plant) Pachyphytum oviferum · hardy to 2 °C (36 °F)
- Mopane (butterfly tree) Colophospermum mopane · hardy to -3 °C (27 °F)
- Moringa Moringa oleifera · hardy to 0 °C (32 °F)
- Moses-in-the-cradle (oyster plant) Tradescantia spathacea · hardy to 2 °C (36 °F)
- Moss phlox (creeping phlox) Phlox subulata · hardy to -37 °C (-35 °F)
- Moss rose (portulaca) Portulaca grandiflora · hardy to 2 °C (36 °F)
- Mother of thousands (devil’s backbone) Kalanchoe daigremontiana · hardy to 2 °C (36 °F)
- Mountain aloe (Marloth’s aloe) Aloe marlothii · hardy to -3 °C (27 °F)
- Mountain avens Dryas octopetala · hardy to -40 °C (-40 °F)
- Mountain cabbage tree Cussonia paniculata · hardy to -8 °C (18 °F)
- Mountain everlasting (pussytoes) Antennaria dioica · hardy to -40 °C (-40 °F)
- Mount Etna broom Genista etnensis · hardy to -15 °C (5 °F)
- Mugwort Artemisia vulgaris · hardy to -35 °C (-31 °F)
- Muntries (emu apple) Kunzea pomifera · hardy to -4 °C (25 °F)
- Myrtle spurge (donkey-tail spurge) Euphorbia myrsinites · hardy to -30 °C (-22 °F)
- Nance (nanche, murici) Byrsonima crassifolia · hardy to 0 °C (32 °F)
- Nanking cherry Prunus tomentosa · hardy to -40 °C (-40 °F)
- Nasturtium Tropaeolum majus · hardy to 2 °C (36 °F)
- Natal plum (num-num, amatungulu) Carissa macrocarpa · hardy to -2 °C (28 °F)
- Native fuchsia (common correa) Correa reflexa · hardy to -5 °C (23 °F)
- Native lilac hibiscus (blue hibiscus) Alyogyne huegelii · hardy to -3 °C (27 °F)
- Neem Azadirachta indica · hardy to 2 °C (36 °F)
- Néré (African locust bean, dawadawa) Parkia biglobosa · hardy to 5 °C (41 °F)
- New Jersey tea Ceanothus americanus · hardy to -35 °C (-31 °F)
- Nodding onion Allium cernuum · hardy to -35 °C (-31 °F)
- Ocotillo Fouquieria splendens · hardy to -12 °C (10 °F)
- Old man banksia (saw banksia) Banksia serrata · hardy to -3 °C (27 °F)
- Old man cactus Cephalocereus senilis · hardy to 0 °C (32 °F)
- Old man of the Andes Oreocereus celsianus · hardy to -10 °C (14 °F)
- Old man saltbush Atriplex nummularia · hardy to -8 °C (18 °F)
- Oleander Nerium oleander · hardy to -7 °C (19 °F)
- Oleander-leaf protea Protea neriifolia · hardy to -4 °C (25 °F)
- Oleaster (Russian olive) Elaeagnus angustifolia · hardy to -35 °C (-31 °F)
- Olive Olea europaea · hardy to -8 °C (18 °F)
- Olympian mullein Verbascum olympicum · hardy to -20 °C (-4 °F)
- Ombú Phytolacca dioica · hardy to -5 °C (23 °F)
- Oregano Origanum vulgare · hardy to -20 °C (-4 °F)
- Oregon grape Berberis aquifolium · hardy to -29 °C (-20 °F)
- Organ pipe cactus Stenocereus thurberi · hardy to -4 °C (25 °F)
- Oriental arborvitae (Chinese thuja) Platycladus orientalis · hardy to -30 °C (-22 °F)
- Oriental poppy Papaver orientale · hardy to -34 °C (-29 °F)
- Ornamental allium Allium giganteum · hardy to -25 °C (-13 °F)
- Ornamental salvia Salvia nemorosa · hardy to -25 °C (-13 °F)
- Oxeye daisy Leucanthemum vulgare · hardy to -34 °C (-29 °F)
- Paddle plant (flapjacks) Kalanchoe thyrsiflora · hardy to 0 °C (32 °F)
- Pale purple coneflower Echinacea pallida · hardy to -35 °C (-31 °F)
- Palmyra palm (toddy palm, tan) Borassus flabellifer · hardy to 2 °C (36 °F)
- Pampas grass Cortaderia selloana · hardy to -17 °C (1 °F)
- Panda plant (pussy ears) Kalanchoe tomentosa · hardy to 5 °C (41 °F)
- Pápalo (papaloquelite) Porophyllum ruderale · hardy to 2 °C (36 °F)
- Parry's agave Agave parryi · hardy to -23 °C (-9 °F)
- Parry's penstemon Penstemon parryi · hardy to -9 °C (16 °F)
- Pasque flower Pulsatilla vulgaris · hardy to -30 °C (-22 °F)
- Pea eggplant (turkey berry) Solanum torvum · hardy to 5 °C (41 °F)
- Pearl millet Cenchrus americanus · hardy to 12 °C (54 °F)
- Pencil tree (firesticks, milk bush) Euphorbia tirucalli · hardy to 2 °C (36 °F)
- Pennsylvania sedge Carex pensylvanica · hardy to -38 °C (-36 °F)
- Perennial candytuft Iberis sempervirens · hardy to -32 °C (-26 °F)
- Perennial flax (blue flax) Linum perenne · hardy to -35 °C (-31 °F)
- Persian silk tree (mimosa) Albizia julibrissin · hardy to -18 °C (0 °F)
- Persian stone cress Aethionema grandiflorum · hardy to -28 °C (-18 °F)
- Peruvian pepper tree Schinus molle · hardy to -7 °C (19 °F)
- Pichi (false heath) Fabiana imbricata · hardy to -15 °C (5 °F)
- Pigeon pea Cajanus cajan · hardy to 2 °C (36 °F)
- Pig’s ear (round-leaved navelwort) Cotyledon orbiculata · hardy to -4 °C (25 °F)
- Pincushion hakea Hakea laurina · hardy to -4 °C (25 °F)
- Pincushion protea Leucospermum cordifolium · hardy to -4 °C (25 °F)
- Pineapple Ananas comosus · hardy to 2 °C (36 °F)
- Pineleaf penstemon Penstemon pinifolius · hardy to -30 °C (-22 °F)
- Pink-and-white everlasting (pink paper daisy) Rhodanthe chlorocephala · hardy to -1 °C (30 °F)
- Pink breath of heaven (confetti bush) Coleonema pulchellum · hardy to -4 °C (25 °F)
- Pink muhly grass Muhlenbergia capillaris · hardy to -20 °C (-4 °F)
- Pink mulla mulla (tall mulla mulla) Ptilotus exaltatus · hardy to 0 °C (32 °F)
- Pink shower (kalapaphruek) Cassia bakeriana · hardy to 3 °C (37 °F)
- Pink trumpet tree (ipê) Handroanthus impetiginosus · hardy to -4 °C (25 °F)
- Pistachio Pistacia vera · hardy to -15 °C (5 °F)
- Pōhutukawa (NZ Christmas tree) Metrosideros excelsa · hardy to -3 °C (27 °F)
- Pomegranate Punica granatum · hardy to -10 °C (14 °F)
- Ponytail palm (elephant’s foot) Beaucarnea recurvata · hardy to -4 °C (25 °F)
- Prairie dropseed Sporobolus heterolepis · hardy to -40 °C (-40 °F)
- Prickly juniper (cade) Juniperus oxycedrus · hardy to -15 °C (5 °F)
- Prickly pear (nopal) Opuntia ficus-indica · hardy to -7 °C (19 °F)
- Pride of Madeira Echium candicans · hardy to -4 °C (25 °F)
- Prince’s feather (huautli amaranth) Amaranthus hypochondriacus · hardy to 2 °C (36 °F)
- Prostrate speedwell Veronica prostrata · hardy to -32 °C (-26 °F)
- Pulque agave (maguey pulquero) Agave salmiana · hardy to -9 °C (16 °F)
- Purple coneflower Echinacea purpurea · hardy to -30 °C (-22 °F)
- Purple coral pea Hardenbergia violacea · hardy to -6 °C (21 °F)
- Purple prairie clover Dalea purpurea · hardy to -38 °C (-36 °F)
- Purslane Portulaca oleracea · hardy to 5 °C (41 °F)
- Quandong (desert quandong) Santalum acuminatum · hardy to -5 °C (23 °F)
- Queensland bottle tree Brachychiton rupestris · hardy to -4 °C (25 °F)
- Queen Victoria agave Agave victoriae-reginae · hardy to -10 °C (14 °F)
- Quinoa Chenopodium quinoa · hardy to -4 °C (25 °F)
- Quiver tree (kokerboom) Aloidendron dichotomum · hardy to -3 °C (27 °F)
- Rattlesnake master Eryngium yuccifolium · hardy to -35 °C (-31 °F)
- Red-and-green kangaroo paw (Mangles’ kangaroo paw) Anigozanthos manglesii · hardy to -2 °C (28 °F)
- Red-flowering gum Corymbia ficifolia · hardy to -3 °C (27 °F)
- Red spider lily Lycoris radiata · hardy to -23 °C (-9 °F)
- Red valerian Centranthus ruber · hardy to -20 °C (-4 °F)
- Red yucca Hesperaloe parviflora · hardy to -18 °C (0 °F)
- Rock samphire (sea fennel) Crithmum maritimum · hardy to -10 °C (14 °F)
- Rock soapwort Saponaria ocymoides · hardy to -30 °C (-22 °F)
- Rooibos (red bush) Aspalathus linearis · hardy to -3 °C (27 °F)
- Rosemary Salvia rosmarinus · hardy to -10 °C (14 °F)
- Rosemary grevillea Grevillea rosmarinifolia · hardy to -8 °C (18 °F)
- Roseroot Rhodiola rosea · hardy to -50 °C (-58 °F)
- Round-leaf buchu Agathosma betulina · hardy to -4 °C (25 °F)
- Royal poinciana (flamboyant) Delonix regia · hardy to 2 °C (36 °F)
- Rubber rabbitbrush Ericameria nauseosa · hardy to -35 °C (-31 °F)
- Rugosa rose Rosa rugosa · hardy to -40 °C (-40 °F)
- Russian sage Salvia yangii · hardy to -34 °C (-29 °F)
- Rye Secale cereale · hardy to -30 °C (-22 °F)
- Safflower Carthamus tinctorius · hardy to -5 °C (23 °F)
- Saffron crocus Crocus sativus · hardy to -15 °C (5 °F)
- Sage-leaved rock rose Cistus salviifolius · hardy to -12 °C (10 °F)
- Sago cycad Cycas revoluta · hardy to -8 °C (18 °F)
- Saguaro Carnegiea gigantea · hardy to -7 °C (19 °F)
- Salad burnet Poterium sanguisorba · hardy to -30 °C (-22 °F)
- Scots pine Pinus sylvestris · hardy to -45 °C (-49 °F)
- Sea buckthorn Hippophae rhamnoides · hardy to -40 °C (-40 °F)
- Sesame Sesamum indicum · hardy to 12 °C (54 °F)
- Shea tree Vitellaria paradoxa · hardy to 5 °C (41 °F)
- Shrubby cinquefoil Dasiphora fruticosa · hardy to -40 °C (-40 °F)
- Shrubby germander (tree germander) Teucrium fruticans · hardy to -8 °C (18 °F)
- Shrubby scorpion vetch (coronilla) Coronilla valentina · hardy to -10 °C (14 °F)
- Siamese cassia (khi lek) Senna siamea · hardy to 5 °C (41 °F)
- Siamese cycad Cycas siamensis · hardy to 0 °C (32 °F)
- Siberian peashrub Caragana arborescens · hardy to -42 °C (-44 °F)
- Sichuan pepper (huajiao) Zanthoxylum bungeanum · hardy to -20 °C (-4 °F)
- Sicilian sumac (spice sumac) Rhus coriaria · hardy to -15 °C (5 °F)
- Silky oak (southern silky oak) Grevillea robusta · hardy to -6 °C (21 °F)
- Silverbush (shrubby bindweed) Convolvulus cneorum · hardy to -8 °C (18 °F)
- Silver jade plant (silver dollar plant) Crassula arborescens · hardy to -2 °C (28 °F)
- Silver torch cactus Cleistocactus strausii · hardy to -10 °C (14 °F)
- Silver tree (witteboom) Leucadendron argenteum · hardy to -3 °C (27 °F)
- Silver wattle (mimosa) Acacia dealbata · hardy to -8 °C (18 °F)
- Siskiyou lewisia Lewisia cotyledon · hardy to -25 °C (-13 °F)
- Smoke tree Cotinus coggygria · hardy to -29 °C (-20 °F)
- Smooth-barked apple (Sydney red gum) Angophora costata · hardy to -4 °C (25 °F)
- Smooth blue aster Symphyotrichum laeve · hardy to -38 °C (-36 °F)
- Snake plant Dracaena trifasciata · hardy to 2 °C (36 °F)
- Snake vine (climbing guinea flower) Hibbertia scandens · hardy to -2 °C (28 °F)
- Snow-in-summer Cerastium tomentosum · hardy to -37 °C (-35 °F)
- Soapbark tree (quillay) Quillaja saponaria · hardy to -10 °C (14 °F)
- Society garlic (wild garlic) Tulbaghia violacea · hardy to -8 °C (18 °F)
- Sorghum Sorghum bicolor · hardy to 10 °C (50 °F)
- Southern live oak Quercus virginiana · hardy to -12 °C (10 °F)
- Southernwood (lad’s love) Artemisia abrotanum · hardy to -30 °C (-22 °F)
- Spanish broom Spartium junceum · hardy to -15 °C (5 °F)
- Spanish dagger (mound lily yucca) Yucca gloriosa · hardy to -20 °C (-4 °F)
- Spekboom (elephant bush) Portulacaria afra · hardy to -2 °C (28 °F)
- Spike lavender (broad-leaved lavender) Lavandula latifolia · hardy to -12 °C (10 °F)
- Spiny-head mat-rush (lomandra) Lomandra longifolia · hardy to -8 °C (18 °F)
- Spiny monkey orange (umhlala) Strychnos spinosa · hardy to -2 °C (28 °F)
- Spotted emu bush Eremophila maculata · hardy to -5 °C (23 °F)
- Spring pasque flower (lady of the snows) Pulsatilla vernalis · hardy to -38 °C (-36 °F)
- Staghorn sumac Rhus typhina · hardy to -38 °C (-36 °F)
- Statice (wavyleaf sea lavender) Limonium sinuatum · hardy to -2 °C (28 °F)
- Sticky monkeyflower (orange bush monkeyflower) Diplacus aurantiacus · hardy to -7 °C (19 °F)
- St John’s wort (common) Hypericum perforatum · hardy to -30 °C (-22 °F)
- Stonecrop (sedum) Hylotelephium spectabile · hardy to -35 °C (-31 °F)
- Strawberry tree Arbutus unedo · hardy to -15 °C (5 °F)
- Strawflower (golden everlasting) Xerochrysum bracteatum · hardy to -2 °C (28 °F)
- String of pearls Curio rowleyanus · hardy to 2 °C (36 °F)
- Sturt’s desert pea Swainsona formosa · hardy to 2 °C (36 °F)
- Sugar apple (sweetsop) Annona squamosa · hardy to 2 °C (36 °F)
- Summer savory Satureja hortensis · hardy to -1 °C (30 °F)
- Switchgrass Panicum virgatum · hardy to -34 °C (-29 °F)
- Tamarind Tamarindus indica · hardy to -2 °C (28 °F)
- Tansy Tanacetum vulgare · hardy to -35 °C (-31 °F)
- Tasmanian blue gum Eucalyptus globulus · hardy to -7 °C (19 °F)
- Taupata (mirror bush) Coprosma repens · hardy to -3 °C (27 °F)
- Teddy-bear cholla Cylindropuntia bigelovii · hardy to -7 °C (19 °F)
- Tepary bean Phaseolus acutifolius · hardy to 5 °C (41 °F)
- Terebinth (turpentine tree) Pistacia terebinthus · hardy to -15 °C (5 °F)
- Texas sage (cenizo) Leucophyllum frutescens · hardy to -12 °C (10 °F)
- Thrift (sea pink) Armeria maritima · hardy to -35 °C (-31 °F)
- Thunberg bush clover (miyagino-hagi) Lespedeza thunbergii · hardy to -26 °C (-15 °F)
- Thyme Thymus vulgaris · hardy to -15 °C (5 °F)
- Tiew (pink mempat, phak tiu) Cratoxylum formosum · hardy to 3 °C (37 °F)
- Tipa (rosewood) Tipuana tipu · hardy to -5 °C (23 °F)
- Toyon (California holly) Heteromeles arbutifolia · hardy to -10 °C (14 °F)
- Trailing ice plant (vygie) Lampranthus spectabilis · hardy to -4 °C (25 °F)
- Treasure flower (gazania) Gazania rigens · hardy to -5 °C (23 °F)
- Tree aloe (Barber’s aloe) Aloidendron barberae · hardy to -2 °C (28 °F)
- Tree cholla (cane cholla) Cylindropuntia imbricata · hardy to -25 °C (-13 °F)
- Tree echium (giant viper's bugloss) Echium pininana · hardy to -4 °C (25 °F)
- Tree heath Erica arborea · hardy to -15 °C (5 °F)
- Tree houseleek (aeonium) Aeonium arboreum · hardy to -2 °C (28 °F)
- Tree pelargonium Pelargonium cucullatum · hardy to -3 °C (27 °F)
- Turkish sage (Russell’s phlomis) Phlomis russeliana · hardy to -25 °C (-13 °F)
- Two-needle piñon Pinus edulis · hardy to -32 °C (-26 °F)
- Umbrella thorn acacia Vachellia tortilis · hardy to -4 °C (25 °F)
- Upright myrtle spurge (gopher spurge) Euphorbia rigida · hardy to -18 °C (0 °F)
- Urn plant (silver vase bromeliad) Aechmea fasciata · hardy to 10 °C (50 °F)
- Velvet mesquite Prosopis velutina · hardy to -15 °C (5 °F)
- Verbena Verbena bonariensis · hardy to -8 °C (18 °F)
- Vervain (common verbena) Verbena officinalis · hardy to -20 °C (-4 °F)
- Wall cotoneaster Cotoneaster horizontalis · hardy to -29 °C (-20 °F)
- Wallflower Erysimum cheiri · hardy to -12 °C (10 °F)
- Wall germander Teucrium chamaedrys · hardy to -25 °C (-13 °F)
- Wax plant (porcelain flower) Hoya carnosa · hardy to 5 °C (41 °F)
- Weeping boer-bean (huilboerboon) Schotia brachypetala · hardy to -3 °C (27 °F)
- Weld (dyer’s rocket) Reseda luteola · hardy to -20 °C (-4 °F)
- Western blue-eyed grass Sisyrinchium bellum · hardy to -12 °C (10 °F)
- Western redbud Cercis occidentalis · hardy to -18 °C (0 °F)
- White carob tree (algarrobo blanco) Prosopis alba · hardy to -10 °C (14 °F)
- White horehound Marrubium vulgare · hardy to -25 °C (-13 °F)
- White mulberry Morus alba · hardy to -34 °C (-29 °F)
- White rock cress (Caucasian arabis) Arabis caucasica · hardy to -32 °C (-26 °F)
- White sage (sacred sage) Salvia apiana · hardy to -7 °C (19 °F)
- White wild indigo Baptisia alba · hardy to -35 °C (-31 °F)
- Wild bergamot Monarda fistulosa · hardy to -38 °C (-36 °F)
- Wild custard apple (African custard apple) Annona senegalensis · hardy to 0 °C (32 °F)
- Wild medlar (mmilo, umviyo) Vangueria infausta · hardy to -3 °C (27 °F)
- Wild pear (drolpeer) Dombeya rotundifolia · hardy to -4 °C (25 °F)
- Winecup (purple poppy mallow) Callirhoe involucrata · hardy to -30 °C (-22 °F)
- Winter jasmine Jasminum nudiflorum · hardy to -20 °C (-4 °F)
- Winter savory Satureja montana · hardy to -23 °C (-9 °F)
- Woad Isatis tinctoria · hardy to -25 °C (-13 °F)
- Wood apple (elephant apple, ma-khwit) Limonia acidissima · hardy to 0 °C (32 °F)
- Wormwood Artemisia absinthium · hardy to -34 °C (-29 °F)
- Yarrow Achillea millefolium · hardy to -35 °C (-31 °F)
- Yellow asphodel (King’s spear, Jacob’s rod) Asphodeline lutea · hardy to -20 °C (-4 °F)
- Yellow bells (yellow trumpetbush) Tecoma stans · hardy to -4 °C (25 °F)
- Yellow flame tree (copperpod, non si) Peltophorum pterocarpum · hardy to 3 °C (37 °F)
- Yellow rattle Rhinanthus minor · hardy to -20 °C (-4 °F)
- Yellow whitlow grass Draba aizoides · hardy to -35 °C (-31 °F)
- Za’atar (Syrian oregano) Origanum syriacum · hardy to -7 °C (19 °F)
- Zebra haworthia (zebra plant) Haworthiopsis attenuata · hardy to 2 °C (36 °F)
- ZZ plant (Zanzibar gem) Zamioculcas zamiifolia · hardy to 10 °C (50 °F)
Reference values for planning, not horticultural, veterinary or medical advice. Varieties, soils and local climates differ: check with a local nursery or extension service.