Troubleshooting
Nerved Catmint problems — and how to fix them
Nerved Catmint (Nepeta nervosa) 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 wet winters
The main vulnerability of this species. Ensure very sharp drainage and avoid mulching over the crown. In cold, wet climates, grow in a raised bed with grit incorporated into the soil.
Short flowering season without deadheading
Removing spent flower spikes promptly encourages further flushes. Without deadheading, flowering ends quickly and energy goes to seed production.
Leggy growth in shade
Even a few hours of shade causes markedly lax, sprawling stems. Always site in full sun. Compact, dense growth is only achieved with maximum light exposure.
Prevent nerved catmint problems before they start
Most nerved catmint issues are care-mismatch, not bad luck. Dial in the basics:
Nerved Catmint problems — FAQ
Why is my nerved catmint crown rot in wet winters?
The main vulnerability of this species. Ensure very sharp drainage and avoid mulching over the crown. In cold, wet climates, grow in a raised bed with grit incorporated into the soil.
Why is my nerved catmint short flowering season without deadheading?
Removing spent flower spikes promptly encourages further flushes. Without deadheading, flowering ends quickly and energy goes to seed production.
Why is my nerved catmint leggy growth in shade?
Even a few hours of shade causes markedly lax, sprawling stems. Always site in full sun. Compact, dense growth is only achieved with maximum light exposure.