Troubleshooting
Mimulus ringens problems — and how to fix them
Mimulus ringens (Mimulus ringens) 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.
Drought stress
The commonest cause of failure. If the soil dries, flowering stops and foliage wilts and browns. Keep roots permanently moist to wet.
Flopping in shade or rich feeding
In low light or with excess nitrogen the soft square stems grow tall and lean over. Site in full sun and feed sparingly for sturdier growth.
Powdery mildew
Crowded, still-air clumps can develop powdery mildew on the leaves. Thin congested growth and allow airflow to reduce it.
Spider mites in dry spells
When the plant is moisture-stressed in hot, dry air, spider mites may appear. Restoring soil moisture and hosing the foliage usually clears them.
Prevent mimulus ringens problems before they start
Most mimulus ringens issues are care-mismatch, not bad luck. Dial in the basics:
Looking for mimulus ringens in general rather than its problems? Read the full mimulus ringens care guide — light, water, soil and feeding.
Mimulus ringens problems — FAQ
Why is my mimulus ringens drought stress?
The commonest cause of failure. If the soil dries, flowering stops and foliage wilts and browns. Keep roots permanently moist to wet.
Why is my mimulus ringens flopping in shade or rich feeding?
In low light or with excess nitrogen the soft square stems grow tall and lean over. Site in full sun and feed sparingly for sturdier growth.
Why is my mimulus ringens powdery mildew?
Crowded, still-air clumps can develop powdery mildew on the leaves. Thin congested growth and allow airflow to reduce it.
Why is my mimulus ringens spider mites in dry spells?
When the plant is moisture-stressed in hot, dry air, spider mites may appear. Restoring soil moisture and hosing the foliage usually clears them.