🌱 Garden ME Open the free app

Wall cotoneaster Cotoneaster horizontalis

Wall cotoneaster (Cotoneaster horizontalis) is a deciduous perennial shrub in the Rosaceae family, native to Western China. It grows 60 cm–1 m (24 in–3.3 ft) tall and 1.5–2.5 m (4.9–8.2 ft) wide, wants full sun and low water, and is hardy to about -29 °C (-20 °F). Space plants about 1.5 m (4.9 ft) apart.

Plan Wall cotoneaster in your garden →
Free. Draw your beds, then watch it grow through the year in 2D and 3D.

Wall cotoneaster at a glance

TypePerennial shrub, deciduous
FamilyRosaceae
Mature height60 cm–1 m (24 in–3.3 ft)
Mature spread1.5–2.5 m (4.9–8.2 ft)
Spacing1.5 m (4.9 ft) centre to centre
SunFull sun, at least 5 h of direct sun a day
WaterLow; drought tolerance high, waterlogging tolerance none
Soil pH6–8
Cold hardinessAbout -29 °C (-20 °F) once established (roughly USDA zone 4)
Heat stressLikely above about 33 °C (91 °F)
Floweringfrom about May for 2–4 weeks (northern hemisphere; later in cold climates, earlier in warm ones)
Wind toleranceModerate
Pollinator valueHigh
EdibleNot grown as food
Native toWestern China
Common in gardens of🇬🇧 United Kingdom, 🇩🇪 Germany, 🇨🇳 China
Invasive inUK (Wildlife and Countryside Act Schedule 9), Australia (environmental weed in southern states), New Zealand (pest plant): check local rules before planting

Is Wall cotoneaster toxic?

Berries contain cyanogenic glycosides and can cause mild stomach upset in children and pets.

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 Wall cotoneaster

Good neighbours

Keep apart or take care

Shared pests and diseases

Questions about Wall cotoneaster

How far apart should I plant Wall cotoneaster?
About 1.5 m (4.9 ft) apart, centre to centre. A mature plant spreads 1.5–2.5 m (4.9–8.2 ft).
Does Wall cotoneaster need full sun?
Full sun: at least 5 hours of direct sun a day.
How much water does Wall cotoneaster need?
Low water. Drought tolerance is high and waterlogging tolerance none.
How cold-hardy is Wall cotoneaster?
It tolerates about -29 °C (-20 °F) once established, roughly USDA zone 4.
When does Wall cotoneaster flower?
From about May for 2–4 weeks (northern hemisphere; later in cold climates, earlier in warm ones).
Is Wall cotoneaster poisonous to cats and dogs?
For cats it is mildly toxic; for dogs mildly toxic; for people mildly toxic. Berries contain cyanogenic glycosides and can cause mild stomach upset in children and pets.
What grows well with Wall cotoneaster?
Gardeners plant garlic chives among roses to deter aphids and black spot; the evidence is weak and mostly anecdotal.

Sources and evidence

Evidence grade C (C: plausible, mixed evidence).

Notes and assumptions

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