Silver Maple Maintenance
Silver Maple is a fast-growing shade tree commonly planted in Colorado, but it is prone to structural weakness, chlorosis in alkaline soils, and several pests and diseases including borers, scale, leaf scorch, and fungal leaf spots.
- Species
- Silver Maple
- Botanical Name
- Acer saccharinum
- Group
- Deciduous Trees
- Tracked Problems
- 7
Seasonal Calendar
| Problem | Type | Active Season |
|---|---|---|
| Aphids | Insect | Spring–Fall |
| Scale insects | Insect/scale | Spring crawlers; visible year-round |
| Maple borers | Insect/borer | Summer |
| Verticillium wilt | Fungus | Spring–Fall |
| Anthracnose / leaf spot | Fungus | Spring–Summer |
| Leaf scorch | Abiotic | Summer–Fall |
| Chlorosis | Abiotic | Spring–Summer |
Pest & Disease Guide
Aphids
Common symptoms
- Sticky honeydew
- Sooty mold
- Leaf curling
Treatment & management
- Rinse foliage
- Encourage beneficial insects
- Treat severe infestations
Scale Insects
Common symptoms
- Hard or cottony masses on bark
- Yellowing leaves
- Branch dieback
Treatment & management
- Treat crawler stage
- Horticultural oil
- Prune infested areas
Maple Borers
Common symptoms
- D-shaped or round exit holes
- Boring dust
- Branch dieback
Treatment & management
- Reduce stress
- Deep watering
- Preventive treatment if needed
Verticillium Wilt
Common symptoms
- One-sided wilting
- Brown streaking in wood
- Rapid decline
Treatment & management
- No cure
- Prune affected limbs
- Support overall tree health
Anthracnose / Leaf Spot
Common symptoms
- Brown blotches along veins
- Distorted leaves
- Early leaf drop
Treatment & management
- Remove infected leaves
- Improve airflow
- Usually cosmetic
Leaf Scorch
Common symptoms
- Brown leaf edges
- Crispy margins
- Early fall color
Treatment & management
- Deep watering
- Mulch base
- Reduce heat stress
Chlorosis
Common symptoms
- Yellow leaves with green veins
- Stunted growth
- Canopy thinning
Treatment & management
- Iron treatments
- Improve soil conditions
- Adjust watering
When to Worry
- One-sided rapid decline (possible wilt)
- Borer holes in trunk or limbs
- Large branch cracking or splitting
- Heavy scale infestation
- Severe chlorosis with dieback
Mostly Cosmetic
- Light leaf spotting
- Minor aphid activity
- Slight scorch after heat
- Occasional early leaf drop
- Small patches of scale
Notes
These issues often require professional arborist evaluation.
These typically resolve with proper watering and seasonal changes.
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.