Tree Pests & Diseases
Serviceberry Tree Maintenance
Serviceberries are excellent ornamental trees for flowers, berries, and fall color, but in Colorado they may develop fire blight, rust, aphids, leaf spot, and drought stress.
- Species
- Serviceberry Tree
- Botanical Name
- Amelanchier spp.
- Group
- Ornamental Trees
- Tracked Problems
- 7
Seasonal Calendar
| Problem | Type | Active Season |
|---|---|---|
| Fire blight | Bacteria | Spring–Summer |
| Rust | Fungus | Spring–Summer |
| Leaf spot | Fungus | Spring–Summer |
| Aphids | Insect | Spring–Fall |
| Scale insects | Insect/scale | Spring crawlers; visible year-round |
| Spider mites | Mite | Summer |
| Drought stress | Abiotic | Summer–Fall |
Pest & Disease Guide
Fire Blight
Common symptoms
- Blackened twigs
- Wilted blossoms
Treatment & management
- Prune infected tissue
- Sanitize tools
Rust
Common symptoms
- Orange spots
- Fruit blemishes
Treatment & management
- Reduce nearby juniper source
- Improve airflow
Leaf Spot
Common symptoms
- Spotted leaves
- Early drop
Treatment & management
- Clean up leaves
- Improve airflow
Aphids
Common symptoms
- Honeydew
- Leaf curl
Treatment & management
- Rinse foliage
- Encourage predators
Scale Insects
Common symptoms
- Bumps on stems
- Canopy thinning
Treatment & management
- Treat crawler stage
- Horticultural oil
Spider Mites
Common symptoms
- Bronzed leaves
- Fine webbing
Treatment & management
- Increase watering
- Rinse canopy
Drought Stress
Common symptoms
- Scorch
- Poor fruiting
Treatment & management
- Deep watering
- Mulch base
When to Worry
- Repeated fire blight
- Severe rust infection
- Heavy dieback
Mostly Cosmetic
- Minor spotting
- Light aphids
- Some summer scorch
Notes
These can reduce bloom, fruit, and long-term vigor.
These often improve with seasonal care and irrigation.
Great Western Tree Care
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.