Troubleshooting
Poker alumroot problems — and how to fix them
Poker alumroot (Heuchera cylindrica) 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.
Root rot from poor drainage
The biggest killer of this drought-adapted species is waterlogged soil. Ensure gritty, free-draining substrate and never allow plants to sit in water. Container plants must have drainage holes.
Vine weevil
Vine weevil larvae attack the fleshy roots of heucheras, causing wilting and plant death. Inspect roots when dividing and apply nematodes (Steinernema kraussei) in late summer as preventive biological control.
Crown exposure after frost heave
Shallow crowns heave out of the soil after freeze-thaw cycles. Press back into soil in spring and mulch with grit (not bark) to retain structure without trapping moisture.
Prevent poker alumroot problems before they start
Most poker alumroot issues are care-mismatch, not bad luck. Dial in the basics:
Looking for poker alumroot in general rather than its problems? Read the full poker alumroot care guide — light, water, soil and feeding.
Poker alumroot problems — FAQ
Why is my poker alumroot root rot from poor drainage?
The biggest killer of this drought-adapted species is waterlogged soil. Ensure gritty, free-draining substrate and never allow plants to sit in water. Container plants must have drainage holes.
Why is my poker alumroot vine weevil?
Vine weevil larvae attack the fleshy roots of heucheras, causing wilting and plant death. Inspect roots when dividing and apply nematodes (Steinernema kraussei) in late summer as preventive biological control.
Why is my poker alumroot crown exposure after frost heave?
Shallow crowns heave out of the soil after freeze-thaw cycles. Press back into soil in spring and mulch with grit (not bark) to retain structure without trapping moisture.