Troubleshooting
Wallis Fescue problems — and how to fix them
Wallis Fescue (Festuca valesiaca 'Glaucantha') is generally low-drama, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Crown and root rot in wet conditions
The most serious risk for this plant; heavy, moisture-retentive soil or extended wet winters cause rapid root and crown rot. Always plant in freely draining soil and improve drainage with grit when necessary.
Centre die-out
As with other fescues, the clump's centre dies out after a few years. Divide every two to three years in spring, keeping only vigorous outer sections, to maintain an attractive, full mound.
Prevent wallis fescue problems before they start
Most wallis fescue issues are care-mismatch, not bad luck. Dial in the basics:
Wallis Fescue problems — FAQ
Why is my wallis fescue crown and root rot in wet conditions?
The most serious risk for this plant; heavy, moisture-retentive soil or extended wet winters cause rapid root and crown rot. Always plant in freely draining soil and improve drainage with grit when necessary.
Why is my wallis fescue centre die-out?
As with other fescues, the clump's centre dies out after a few years. Divide every two to three years in spring, keeping only vigorous outer sections, to maintain an attractive, full mound.