Troubleshooting
Acer rubrum 'Autumn Blaze' problems — and how to fix them
Acer rubrum 'Autumn Blaze' (Acer rubrum 'Autumn Blaze') is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Included bark and weak crotches
Fast growth can create narrow, tight branch unions with included bark that split in storms. Formative prune young trees to wide-angled, well-spaced scaffold branches.
Mild chlorosis on alkaline soil
Less prone than red maple, but high-pH soils can still yellow the foliage. Mulch with acidic organic matter and apply chelated iron if leaves pale between the veins.
Vigorous surface roots
Shallow, strong roots can heave lawns and paving. Site well away from drives, paths and foundations and mulch rather than mow tight to the trunk.
Storm and frost limb damage
Rapid, somewhat brittle growth makes branches vulnerable to wind, ice and late frosts. Stake and train young trees and remove damaged wood promptly.
Prevent acer rubrum 'autumn blaze' problems before they start
Most acer rubrum 'autumn blaze' issues are care-mismatch, not bad luck. Dial in the basics:
- Common acer rubrum problems — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Acer rubrum 'Autumn Blaze' watering schedule
- Acer rubrum 'Autumn Blaze' light requirements
- Best soil mix for acer rubrum 'autumn blaze'
- Acer rubrum 'Autumn Blaze' temperature & humidity
- Full acer rubrum 'autumn blaze' care guide
Looking for the species overview? Acer rubrum — the full care guide.
Other Acer rubrum varieties
Acer rubrum 'Autumn Blaze' problems — FAQ
Why is my acer rubrum 'autumn blaze' included bark and weak crotches?
Fast growth can create narrow, tight branch unions with included bark that split in storms. Formative prune young trees to wide-angled, well-spaced scaffold branches.
Why is my acer rubrum 'autumn blaze' mild chlorosis on alkaline soil?
Less prone than red maple, but high-pH soils can still yellow the foliage. Mulch with acidic organic matter and apply chelated iron if leaves pale between the veins.
Why is my acer rubrum 'autumn blaze' vigorous surface roots?
Shallow, strong roots can heave lawns and paving. Site well away from drives, paths and foundations and mulch rather than mow tight to the trunk.
Why is my acer rubrum 'autumn blaze' storm and frost limb damage?
Rapid, somewhat brittle growth makes branches vulnerable to wind, ice and late frosts. Stake and train young trees and remove damaged wood promptly.