Troubleshooting
Dunn's cape primrose problems — and how to fix them
Dunn's cape primrose (Streptocarpus dunnii) 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 and crown rot
The single greatest risk; caused by overwatering or a soil mix that retains too much moisture. Use a very open, gritty medium and err on the side of underwatering.
Fungal leaf spotting
Waterlogged conditions or high humidity without airflow lead to grey mould (Botrytis) or fungal lesions on the large leaf. Improve ventilation and avoid wetting foliage.
Failure to flower (delayed monocarpic cycle)
This species may take several years to reach flowering maturity. Adequate bright indirect light and consistent feeding during the growing season helps the plant reach blooming stage faster.
Prevent dunn's cape primrose problems before they start
Most dunn's cape primrose issues are care-mismatch, not bad luck. Dial in the basics:
Dunn's cape primrose problems — FAQ
Why is my dunn's cape primrose root and crown rot?
The single greatest risk; caused by overwatering or a soil mix that retains too much moisture. Use a very open, gritty medium and err on the side of underwatering.
Why is my dunn's cape primrose fungal leaf spotting?
Waterlogged conditions or high humidity without airflow lead to grey mould (Botrytis) or fungal lesions on the large leaf. Improve ventilation and avoid wetting foliage.
Why is my dunn's cape primrose failure to flower (delayed monocarpic cycle)?
This species may take several years to reach flowering maturity. Adequate bright indirect light and consistent feeding during the growing season helps the plant reach blooming stage faster.