Troubleshooting
Crocus sativus problems — and how to fix them
Crocus sativus (Crocus sativus) 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.
No flowers
The commonest complaint, caused by too much shade, cool wet summers, shallow planting or overcrowding. Give full sun, a hot dry summer rest, deep planting and periodic division.
Corm rot in wet soil
Summer moisture or heavy soil rots the corms. Grow in very sharp-draining or raised beds and keep bone dry through dormancy.
Low saffron yield
Each flower gives only three stigmas, so many corms and several years are needed for a usable harvest. Plant generously and lift/divide congested clumps to maintain vigour.
Rodent and squirrel damage
Corms are dug up and eaten. Protect plantings with wire mesh and a grit mulch.
Prevent crocus sativus problems before they start
Most crocus sativus issues are care-mismatch, not bad luck. Dial in the basics:
Looking for the species overview? Crocus — the full care guide.
Crocus sativus problems — FAQ
Why is my crocus sativus no flowers?
The commonest complaint, caused by too much shade, cool wet summers, shallow planting or overcrowding. Give full sun, a hot dry summer rest, deep planting and periodic division.
Why is my crocus sativus corm rot in wet soil?
Summer moisture or heavy soil rots the corms. Grow in very sharp-draining or raised beds and keep bone dry through dormancy.
Why is my crocus sativus low saffron yield?
Each flower gives only three stigmas, so many corms and several years are needed for a usable harvest. Plant generously and lift/divide congested clumps to maintain vigour.
Why is my crocus sativus rodent and squirrel damage?
Corms are dug up and eaten. Protect plantings with wire mesh and a grit mulch.