Troubleshooting
Cat Thyme problems — and how to fix them
Cat Thyme (Teucrium marum) 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.
Root rot from winter wet
The most frequent killer; ensure the planting site has near-perfect drainage and consider a grit mulch around the collar to divert standing water.
Frost damage to stems
Rated RHS H3, so plants in cold inland gardens can lose stems in hard frosts; avoid cutting back until new growth appears in spring to confirm what has survived.
Prevent cat thyme problems before they start
Most cat thyme issues are care-mismatch, not bad luck. Dial in the basics:
Looking for cat thyme in general rather than its problems? Read the full cat thyme care guide — light, water, soil and feeding.
Cat Thyme problems — FAQ
Why is my cat thyme root rot from winter wet?
The most frequent killer; ensure the planting site has near-perfect drainage and consider a grit mulch around the collar to divert standing water.
Why is my cat thyme frost damage to stems?
Rated RHS H3, so plants in cold inland gardens can lose stems in hard frosts; avoid cutting back until new growth appears in spring to confirm what has survived.