Troubleshooting
Sand Crocus problems — and how to fix them
Sand Crocus (Romulea columnae) is generally low-drama, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Corm rot in wet conditions
The chief problem in UK gardens; corms rot quickly if left in moist soil during summer dormancy. Grow under cover in an alpine house or lift corms after foliage dies back and store in dry sand.
Failure to flower
Insufficient sun or too rich a growing medium causes plants to produce foliage but no blooms. Relocate to a sunnier position and reduce soil fertility by adding extra grit.
Prevent sand crocus problems before they start
Most sand crocus issues are care-mismatch, not bad luck. Dial in the basics:
Sand Crocus problems — FAQ
Why is my sand crocus corm rot in wet conditions?
The chief problem in UK gardens; corms rot quickly if left in moist soil during summer dormancy. Grow under cover in an alpine house or lift corms after foliage dies back and store in dry sand.
Why is my sand crocus failure to flower?
Insufficient sun or too rich a growing medium causes plants to produce foliage but no blooms. Relocate to a sunnier position and reduce soil fertility by adding extra grit.