Troubleshooting
California Fescue problems — and how to fix them
California Fescue (Festuca californica) 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.
Summer dormancy and browning
Foliage browns and goes semi-dormant in hot, dry summers — this is normal. Cut back lightly to remove the worst scorched tips; the clump re-greens in autumn.
Crown rot in wet winters
Persistently wet, cold soils in UK winters can cause crown rot. Ensure excellent drainage; a gritty mulch around the crown helps.
Centre die-back in old clumps
Like most grasses, clumps become woody and hollow with age. Divide every 3-5 years in autumn or early spring.
Slugs on young transplants
Young plants are susceptible until established. Protect with grit mulch for the first season.
Insufficient flowering in heavy shade
Deep shade suppresses the tall flower panicles. Move to a position with at least 2-3 hours of direct sun or bright dappled light.
Prevent california fescue problems before they start
Most california fescue issues are care-mismatch, not bad luck. Dial in the basics:
California Fescue problems — FAQ
Why is my california fescue summer dormancy and browning?
Foliage browns and goes semi-dormant in hot, dry summers — this is normal. Cut back lightly to remove the worst scorched tips; the clump re-greens in autumn.
Why is my california fescue crown rot in wet winters?
Persistently wet, cold soils in UK winters can cause crown rot. Ensure excellent drainage; a gritty mulch around the crown helps.
Why is my california fescue centre die-back in old clumps?
Like most grasses, clumps become woody and hollow with age. Divide every 3-5 years in autumn or early spring.
Why is my california fescue slugs on young transplants?
Young plants are susceptible until established. Protect with grit mulch for the first season.
Why is my california fescue insufficient flowering in heavy shade?
Deep shade suppresses the tall flower panicles. Move to a position with at least 2-3 hours of direct sun or bright dappled light.