Crab Apple
Malus spp.
Crab apples are among the most ornamental and useful small trees for UK gardens, providing four seasons of interest: beautiful blossom in April and May, attractive foliage in summer, colourful fruits from September, and elegant bare branching structure in winter. They're also outstanding pollinators for eating apple varieties — a single crab apple can pollinate most dessert and cooking apples within a 50-metre radius. The fruits, though too tart for eating raw, make exceptional jelly (high in pectin, so sets easily), are wonderful added to apple pies and chutneys, and can be used for crab apple wine. 'John Downie' is widely considered the best for jelly-making, with large, attractive, red-and-yellow fruits and profuse white blossom. 'Evereste' has orange-red fruits that persist well into winter, providing food for birds. 'Royal Beauty' is a weeping variety with deep pink flowers and dark red fruits. Malus × robusta 'Red Sentinel' holds its glossy red fruits right through to March — the last tree to be stripped by birds. Crab apples grow in any reasonable soil, tolerate some shade (though flower better in sun), and need minimal pruning — just remove dead or crossing branches in winter. They're fully hardy across the UK and can be grown as standard trees, half-standards, or even trained as espaliers.
Plan where to grow Crab Apple using our vegetable garden planner.
When to Plant Crab Apple
Plant crab apple in November, December, January, February, March. It flowers from April to May.
Companion Plants for Crab Apple
- Chives
Chives are traditionally grown under apple trees, and are thought by some gardeners to help reduce apple scab, though evidence is anecdotal; their flowers also draw pollinators.
- Nasturtium
Nasturtiums are often planted under fruit trees as a sacrificial crop that is thought to draw aphids away, and they cover bare soil with flowers.
Expected Yield
A mature tree produces 10–30kg of fruit. Makes outstanding jelly and crab apple wine. Pollinates nearby apple trees.
Growing Tips
Excellent pollinator for eating apples; fruits make superb jelly
Pruning Crab Apple
Crab apples need little pruning: in winter, while dormant (November to March), remove dead, diseased, crossing or congested branches and any suckers from the rootstock. Trained forms such as espaliers are also summer pruned in August.
Common Problems with Crab Apple
Apple scab
Dark, scabby spots on leaves and fruits, causing early leaf drop and cracked, distorted fruit. Worst in wet springs and crowded conditions. Rake up and destroy fallen leaves in autumn to break the cycle. Choose scab-resistant varieties like 'Evereste' (excellent resistance). Improve air circulation by thinning crowded branches.
Fireblight
Shoots wilt suddenly, turning brown or black as if scorched, and may ooze bacterial slime. A notifiable disease in the UK. Cut out affected branches at least 30cm below the infection, disinfecting tools between cuts. Destroy removed material — do not compost. Report confirmed cases to APHA (Animal and Plant Health Agency).
Woolly aphid
White, waxy, cotton-wool-like patches on branches and around pruning wounds, covering dense colonies of aphids. While unsightly, woolly aphid is rarely seriously harmful to an established tree. Scrub off with a stiff brush, or spray with organic soap-based insecticide. The parasitic wasp Aphelinus mali provides natural control in many areas.
Crab Apple: common questions
When should I plant crab apple in the UK?
Plant crab apple from November to March.
How far apart should I plant crab apple?
Space crab apple about 4m apart. It grows to around 6m tall.
When is crab apple ready to harvest?
In the UK, crab apple is usually harvested from September to October.
When does crab apple flower?
Crab Apple usually flowers from April to May in the UK.
When should I prune crab apple?
Crab apples need little pruning: in winter, while dormant (November to March), remove dead, diseased, crossing or congested branches and any suckers from the rootstock. Trained forms such as espaliers are also summer pruned in August.
What grows well with crab apple?
Good companions for crab apple include Chives and Nasturtium. See the companion plants section above for why each one helps.
Is crab apple frost hardy?
Yes. Crab Apple is hardy and survives a normal UK winter outdoors.
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