Troubleshooting
Coreopsis 'Uptick Gold and Bronze' problems — and how to fix them
Coreopsis 'Uptick Gold and Bronze' (Coreopsis 'Uptick Gold and Bronze') 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.
Crown rot in poorly drained soils
Despite improved humidity tolerance, waterlogged roots will still cause crown rot. Ensure good soil drainage.
Aphids
Occasional on young growth. A strong water jet is usually sufficient; use insecticidal soap for heavier infestations.
Aster yellows
Distorted or virescent flowers caused by a phytoplasma spread by leafhoppers. Remove affected plants immediately.
Clump die-out
Central portions of older clumps may die. Divide every 3-4 years in spring.
Slugs
Young shoots emerging in spring can be damaged. Apply organic slug controls around crowns early in the season.
Prevent coreopsis 'uptick gold and bronze' problems before they start
Most coreopsis 'uptick gold and bronze' issues are care-mismatch, not bad luck. Dial in the basics:
Coreopsis 'Uptick Gold and Bronze' problems — FAQ
Why is my coreopsis 'uptick gold and bronze' crown rot in poorly drained soils?
Despite improved humidity tolerance, waterlogged roots will still cause crown rot. Ensure good soil drainage.
Why is my coreopsis 'uptick gold and bronze' aphids?
Occasional on young growth. A strong water jet is usually sufficient; use insecticidal soap for heavier infestations.
Why is my coreopsis 'uptick gold and bronze' aster yellows?
Distorted or virescent flowers caused by a phytoplasma spread by leafhoppers. Remove affected plants immediately.
Why is my coreopsis 'uptick gold and bronze' clump die-out?
Central portions of older clumps may die. Divide every 3-4 years in spring.
Why is my coreopsis 'uptick gold and bronze' slugs?
Young shoots emerging in spring can be damaged. Apply organic slug controls around crowns early in the season.