Troubleshooting
Fire Alarm Heuchera problems — and how to fix them
Fire Alarm Heuchera (Heuchera 'Fire Alarm') 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 heaving
Winter freeze-thaw lifts the crown clear of the soil. Mulch in autumn and re-plant or firm heaved crowns in spring.
Crown and root rot
Waterlogged soil rots the crown fast. Use grit-amended, free-draining soil and plant slightly high.
Vine weevil
Adults notch the leaves while larvae destroy roots, causing sudden wilt in containers. Treat with beneficial nematodes if grubs are found.
Faded red in shade
Too little light turns the red dull and brownish. Provide brighter dappled light to keep the colour vivid.
Prevent fire alarm heuchera problems before they start
Most fire alarm heuchera issues are care-mismatch, not bad luck. Dial in the basics:
Looking for fire alarm heuchera in general rather than its problems? Read the full fire alarm heuchera care guide — light, water, soil and feeding.
Fire Alarm Heuchera problems — FAQ
Why is my fire alarm heuchera crown heaving?
Winter freeze-thaw lifts the crown clear of the soil. Mulch in autumn and re-plant or firm heaved crowns in spring.
Why is my fire alarm heuchera crown and root rot?
Waterlogged soil rots the crown fast. Use grit-amended, free-draining soil and plant slightly high.
Why is my fire alarm heuchera vine weevil?
Adults notch the leaves while larvae destroy roots, causing sudden wilt in containers. Treat with beneficial nematodes if grubs are found.
Why is my fire alarm heuchera faded red in shade?
Too little light turns the red dull and brownish. Provide brighter dappled light to keep the colour vivid.