Troubleshooting
Rubrum Epimedium problems — and how to fix them
Rubrum Epimedium (Epimedium × rubrum) 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.
Ragged winter foliage
Old leaves look weathered by late winter and can mask flowers. Shear them off in February before bloom stems emerge.
Slow to establish
It spreads gradually in the first year or two. Keep watered and mulched while the rhizomes knit together.
Vine weevil
Larvae may attack roots, especially in pots. Inspect roots and treat with beneficial nematodes if grubs are found.
Sparse bloom in deepest shade
Very dark, dry, root-filled spots reduce flowering. Improve soil and allow a little indirect light for best display.
Prevent rubrum epimedium problems before they start
Most rubrum epimedium issues are care-mismatch, not bad luck. Dial in the basics:
Looking for rubrum epimedium in general rather than its problems? Read the full rubrum epimedium care guide — light, water, soil and feeding.
Rubrum Epimedium problems — FAQ
Why is my rubrum epimedium ragged winter foliage?
Old leaves look weathered by late winter and can mask flowers. Shear them off in February before bloom stems emerge.
Why is my rubrum epimedium slow to establish?
It spreads gradually in the first year or two. Keep watered and mulched while the rhizomes knit together.
Why is my rubrum epimedium vine weevil?
Larvae may attack roots, especially in pots. Inspect roots and treat with beneficial nematodes if grubs are found.
Why is my rubrum epimedium sparse bloom in deepest shade?
Very dark, dry, root-filled spots reduce flowering. Improve soil and allow a little indirect light for best display.