Troubleshooting
Woolly Weingartia problems — and how to fix them
Woolly Weingartia (Weingartia lanata) 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.
Collar rot
Excess moisture at the base, especially in cool conditions, causes rapid decay. Ensure the top layer of compost is dry before watering.
Failure to flower
A cool, dry winter rest at 5-10°C is essential. Without it, flower buds fail to develop.
Mealy bugs
White woolly patches between areoles can be confused with natural tufts. Treat infested areas with isopropyl alcohol.
Pale, elongated growth
Sign of insufficient light. Relocate to a sunnier sill or supplement with a grow light.
Prevent woolly weingartia problems before they start
Most woolly weingartia issues are care-mismatch, not bad luck. Dial in the basics:
Woolly Weingartia problems — FAQ
Why is my woolly weingartia collar rot?
Excess moisture at the base, especially in cool conditions, causes rapid decay. Ensure the top layer of compost is dry before watering.
Why is my woolly weingartia failure to flower?
A cool, dry winter rest at 5-10°C is essential. Without it, flower buds fail to develop.
Why is my woolly weingartia mealy bugs?
White woolly patches between areoles can be confused with natural tufts. Treat infested areas with isopropyl alcohol.
Why is my woolly weingartia pale, elongated growth?
Sign of insufficient light. Relocate to a sunnier sill or supplement with a grow light.