Troubleshooting
Rocky Mountain Bee Plant problems — and how to fix them
Rocky Mountain Bee Plant (Cleome serrulata) 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.
Aphids
Clusters of aphids can form on tender new growth; knock off with a strong water spray or apply insecticidal soap.
Spider mites
Can appear in hot, dry spells — increase air circulation and mist foliage in severe cases.
Powdery mildew
Occasional in humid, poorly ventilated spots; improve spacing and avoid overhead watering.
Legginess
Caused by insufficient sunlight; relocate to a full-sun position.
Self-seeding invasively
Plants set copious seed and can naturalise aggressively; deadhead spent flowers to manage spread in garden beds.
Prevent rocky mountain bee plant problems before they start
Most rocky mountain bee plant issues are care-mismatch, not bad luck. Dial in the basics:
Rocky Mountain Bee Plant problems — FAQ
Why is my rocky mountain bee plant aphids?
Clusters of aphids can form on tender new growth; knock off with a strong water spray or apply insecticidal soap.
Why is my rocky mountain bee plant spider mites?
Can appear in hot, dry spells — increase air circulation and mist foliage in severe cases.
Why is my rocky mountain bee plant powdery mildew?
Occasional in humid, poorly ventilated spots; improve spacing and avoid overhead watering.
Why is my rocky mountain bee plant legginess?
Caused by insufficient sunlight; relocate to a full-sun position.
Why is my rocky mountain bee plant self-seeding invasively?
Plants set copious seed and can naturalise aggressively; deadhead spent flowers to manage spread in garden beds.