Dutchman’s breeches Dicentra cucullaria
Dutchman’s breeches (Dicentra cucullaria) is a deciduous perennial flowering plant in the Papaveraceae family, native to Rich woods of eastern North America, with a separate population in the Pacific Northwest. It grows 15–30 cm (6–12 in) tall and 15–30 cm (6–12 in) wide, wants part sun to part shade and moderate water, and is hardy to about -35 °C (-31 °F). Space plants about 20 cm (8 in) apart.
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Dutchman’s breeches at a glance
| Type | Perennial flowering plant, deciduous |
|---|---|
| Family | Papaveraceae |
| Mature height | 15–30 cm (6–12 in) |
| Mature spread | 15–30 cm (6–12 in) |
| Spacing | 20 cm (8 in) centre to centre |
| Sun | Part sun to part shade, at least 3 h of direct sun a day |
| Water | Moderate; drought tolerance low, waterlogging tolerance none |
| Soil pH | 5.5–7.5 |
| Cold hardiness | About -35 °C (-31 °F) once established (roughly USDA zone 3) |
| Heat stress | Likely above about 28 °C (82 °F) |
| Flowering | from about April for 1–3 weeks (northern hemisphere; later in cold climates, earlier in warm ones) |
| Wind tolerance | Low |
| Pollinator value | Moderate |
| Edible | Not grown as food |
| Native to | Rich woods of eastern North America, with a separate population in the Pacific Northwest |
| Common in gardens of | 🇺🇸 United States, 🇨🇦 Canada, 🇬🇧 United Kingdom |
Is Dutchman’s breeches toxic?
- People: moderately toxic
- Cats: moderately toxic
- Dogs: moderately toxic
- Parts: all parts, especially tubers
Contains isoquinoline alkaloids that poison grazing cattle (“staggers”) and can harm pets; the sap may irritate skin.
If a child or pet may have eaten part of a plant, call a poison centre or vet straight away.
Companion planting: what to grow with Dutchman’s breeches
No well-documented helpful pairing. Group it with plants that like part sun to part shade and moderate water.
Questions about Dutchman’s breeches
- How far apart should I plant Dutchman’s breeches?
- About 20 cm (8 in) apart, centre to centre. A mature plant spreads 15–30 cm (6–12 in).
- Does Dutchman’s breeches need full sun?
- Part sun to part shade: at least 3 hours of direct sun a day.
- How much water does Dutchman’s breeches need?
- Moderate water. Drought tolerance is low and waterlogging tolerance none.
- How cold-hardy is Dutchman’s breeches?
- It tolerates about -35 °C (-31 °F) once established, roughly USDA zone 3.
- When does Dutchman’s breeches flower?
- From about April for 1–3 weeks (northern hemisphere; later in cold climates, earlier in warm ones).
- Is Dutchman’s breeches poisonous to cats and dogs?
- For cats it is moderately toxic; for dogs moderately toxic; for people moderately toxic. Contains isoquinoline alkaloids that poison grazing cattle (“staggers”) and can harm pets; the sap may irritate skin.
- What grows well with Dutchman’s breeches?
- There is no well-documented companion pairing for Dutchman’s breeches. Group it with plants that like the same sun (part sun to part shade) and water (moderate).
Sources and evidence
Evidence grade A (A: strong evidence).
- Plants of the World Online (taxonomy, native range), Royal Botanic Gardens, Kew
- Missouri Botanical Garden Plant Finder, Missouri Botanical Garden
- Illinois Wildflowers (descriptions and insect-visitor records), John Hilty, illinoiswildflowers.info
Notes and assumptions
- A spring ephemeral of eastern woodlands: it flowers and leafs out before the trees close their canopy, then dies back by midsummer. Plant under deciduous trees in leafy, moist soil.
- Lacy, blue-green leaves and arching stems hung with white flowers shaped like tiny pairs of pantaloons upside down on a washing line, in early spring; bumblebee queens open them. Gone by early summer.
Reference values for planning, not horticultural, veterinary or medical advice. Varieties, soils and local climates differ: check with a local nursery or extension service.
Related plants
- Field poppy Papaver rhoeas
- Bleeding heart Lamprocapnos spectabilis
- California poppy Eschscholzia californica
- Oriental poppy Papaver orientale
- Himalayan blue poppy Meconopsis betonicifolia
- Matilija poppy Romneya coulteri
- Arctic poppy Papaver radicatum
- Bloodroot Sanguinaria canadensis