How to Grow Weeping Willow
Salix babylonica
Plant a weeping willow only if you have ample space and moisture — this is a large, fast-growing tree reaching 15-25m. Keep it at least 15m from buildings, drains, and foundations as the roots are aggressive and invasive. It thrives near ponds and streams in full sun. Prune in late summer to avoid sap bleeding and remove dead or crossing branches.
Yearly Lifecycle
Care Essentials
Mulch young trees with compost in spring for the first few years to aid establishment. Established weeping willows are vigorous growers and rarely need feeding.
Watch For
- Willow scab (dark leaf spots and shoot dieback in wet springs)
- Giant willow aphid colonies on branches in late summer
- Willow leaf beetle skeletonising leaves
- Honey fungus at the base of established trees
- Watermark disease (notifiable in the UK)
Track your Weeping Willow care schedule — pruning, feeding, and seasonal tasks
Start planning freeCare Requirements
☀️ Light
Full sun to part shade; best in open positions
Full sun to partial shade. Grows best in an open position with good light. Tolerates some shade but the weeping habit is most graceful in full sun.
💧 Watering
Loves moisture; ideal near water features
Thrives in moist to wet soil and is ideal near ponds, streams, or in low-lying areas. Young trees need regular watering until established.
🌱 Fertilizing
Compost mulch when young; rarely needs feeding
Mulch with compost in spring for the first few years. Established trees rarely need feeding as they are vigorous growers.
✂️ Pruning
Late summer; remove dead wood and crown-lift
Prune in late summer or early autumn to avoid sap bleeding. Remove dead, damaged, or crossing branches. Crown-lift if trailing branches obstruct access.
🌿 Spacing
Keep 15m+ from buildings and drains
Allow at least 15m from buildings, drains, and foundations. Willow roots are aggressive and invasive, seeking out water sources and drains.
Growing Tips
Site well away from buildings
Keep weeping willows at least 15m from buildings, drains, and foundations. The roots are aggressive water-seekers and can cause serious structural damage.
Prune in late summer
Prune in late summer or early autumn to avoid sap bleeding. Crown-lift trailing branches if they obstruct paths or access.
Watch for willow scab
Watch for willow scab in wet springs — dark spots on leaves and dieback of young shoots. Prune out affected growth and improve air circulation.
Tolerate willow aphids
Giant willow aphids form large colonies on branches in late summer, producing copious honeydew. Blast off with water if accessible, but on large trees they are rarely worth treating.
Pests & Diseases
Pest Willow Leaf Beetle
Identification: Metallic blue-green beetles and black larvae skeletonising leaves from late spring
- Pick off beetles and larvae by hand
- Encourage natural predators such as birds and parasitic wasps
- Contact insecticide containing deltamethrin if infestation is severe
Pest Giant Willow Aphid
Identification: Large grey-brown aphids clustered on branches and trunk, sticky honeydew and sooty mould below
- Blast off with a strong jet of water
- Encourage ladybirds and lacewings
- Rarely justified on large trees; spot-treat with fatty acid spray if accessible
Pest Willow Sawfly
Identification: Caterpillar-like larvae feeding on leaves, often curling or rolling them
- Hand-pick larvae when seen
- Encourage parasitic wasps and birds
- Spray with pyrethrin-based insecticide for severe infestations on young trees
Disease Willow Scab Venturia saliciperda
Symptoms: Dark brown to black spots on leaves, premature leaf drop, and dieback of young shoots in spring
Treatment: Prune out and destroy affected shoots. Improve air circulation around the canopy
Prevention: Avoid overhead watering. Remove fallen leaves in autumn. Choose resistant cultivars
Disease Watermark Disease Brenneria salicis
Symptoms: Wilting and dieback of branches, reddish-brown staining visible in cut wood
Treatment: No cure. Remove and destroy affected trees to prevent spread
Prevention: Buy certified disease-free stock. Avoid pruning in wet weather
Disease Honey Fungus Armillaria mellea
Symptoms: Yellowing and dieback of branches, white fungal mycelium under bark at base, honey-coloured toadstools in autumn
Treatment: Remove and destroy infected trees including as much root as possible
Prevention: Avoid planting in sites with known honey fungus. Install root barriers around vulnerable trees
Spacing & Planting
| Plant spacing | 1500 cm |
| Row spacing | 1500 cm |
| Mature height | 1200 cm |
| Mature spread | 1000 cm |
Large graceful tree reaching 15-25m with sweeping branches. Needs ample space and moisture. Fast growing. Keep well away from buildings, drains and foundations. Ideal near ponds or streams.
Log Weeping Willow in your garden — track growth, care, and harvests year after year
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