Caring for Crab Apple

Malus 'Evereste' has moderate water needs. Water newly planted trees regularly through their first spring and summer—once or twice a week in dry spells—to help roots establish. Mature trees are fairly drought-tolerant but benefit from deep watering during prolonged dry periods, especially when fruit is developing in late spring and summer. Avoid shallow, frequent watering, which encourages surface roots. Feed in March or April with a general-purpose granular fertiliser such as Growmore or blood, fish, and bone, scattered in a circle around the drip line of the canopy and lightly forked in. A single application each spring is sufficient; over-feeding promotes leafy growth at the expense of flowers and fruit. Mulch annually in early spring with well-rotted compost or bark, maintaining a 5 cm layer but keeping it clear of the trunk. This cultivar is fully hardy across zones 4a to 8b and needs no winter protection. The small, persistent fruits provide interest well into winter and are valuable for birds. Maintenance is low, but watch for apple scab, which causes dark blotches on leaves and fruit, particularly in wet seasons. Rake up and dispose of fallen leaves in autumn to reduce overwintering spores. Powdery mildew can affect young shoots in dry springs; improve air circulation through light pruning if necessary. Aphids may cluster on soft new growth in spring, and caterpillars occasionally damage leaves in summer, but neither usually warrants treatment on ornamental trees. Canker—sunken, cracked patches on branches—can occur on stressed trees; prune out affected wood in winter. Keep the base of the tree clear of weeds and grass to reduce competition and improve vigour.