Willow Maintenance
Willows grow quickly and prefer moist soils, making them common in irrigated landscapes. They are attractive but prone to pests, disease, and structural issues, especially in dry or windy sites.
- Species
- Willow
- Botanical Name
- Salix spp. — includes Weeping Willow, Golden Willow, Globe Willow, and others
- Group
- Deciduous Trees
- Tracked Problems
- 7
Seasonal Calendar
| Problem | Type | Active Season |
|---|---|---|
| Willow leaf beetle | Insect | Spring–Summer |
| Aphids | Insect | Spring–Fall |
| Scale insects | Insect | Spring crawlers; visible year-round |
| Borers | Insect/borer | Summer |
| Canker diseases | Fungus | Spring–Fall |
| Leaf spot / rust | Fungus | Spring–Summer |
| Environmental stress | Abiotic | Summer–Fall |
Pest & Disease Guide
Willow Leaf Beetle
Common symptoms
- Skeletonized leaves
- Patchy defoliation
Treatment & management
- Usually cosmetic
- Rinse foliage
- Treat severe cases
Aphids
Common symptoms
- Sticky honeydew
- Sooty mold
- Leaf curling
Treatment & management
- Water spray
- Encourage beneficial insects
Scale Insects
Common symptoms
- Bumps on twigs
- Yellowing leaves
Treatment & management
- Treat crawler stage
- Horticultural oil
Borers
Common symptoms
- Exit holes
- Frass buildup
- Branch dieback
Treatment & management
- Reduce stress
- Deep watering
- Professional treatment if needed
Canker Diseases
Common symptoms
- Sunken or cracked bark
- Oozing sap
- Dieback
Treatment & management
- Prune infected limbs
- Improve tree vigor
Leaf Spot / Rust
Common symptoms
- Leaf spotting
- Premature leaf drop
Treatment & management
- Remove leaves
- Improve airflow
Environmental Stress
Common symptoms
- Leaf scorch
- Broken limbs
- Sparse canopy
Treatment & management
- Deep watering
- Structural pruning
- Avoid exposed sites
When to Worry
- Large branch breakage
- Heavy borer activity
- Expanding cankers
- Severe scale infestation
- Repeated defoliation
Mostly Cosmetic
- Light beetle feeding
- Mild aphid activity
- Minor leaf spotting
- Occasional tip dieback
Notes
Willows grow fast but have weak wood, making structural issues a major concern.
These typically resolve with watering and seasonal recovery.
Related Resources
Related Services
When you want a professional opinion
The Root exists to help you understand your landscape. When a tree needs hands-on evaluation, a Great Western arborist can look at it in person.