Troubleshooting
Crocosmia masoniorum problems — and how to fix them
Crocosmia masoniorum (Crocosmia masoniorum) 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.
Reduced flowering when congested
Crowded corm colonies make foliage at the expense of flowers; lift and divide every few years to keep it blooming well.
Spider mites in hot, dry spells
Drought stress invites spider mites that mottle and bronze the broad leaves; maintain moisture and hose the foliage.
Corm rot in cold, wet winters
Hardy but not bulletproof, it can lose corms in waterlogged winter soil; mulch in cold areas and ensure good drainage.
Spreading clumps
Corms multiply and the clump expands steadily; divide to control spread and refresh vigour where space is limited.
Prevent crocosmia masoniorum problems before they start
Most crocosmia masoniorum issues are care-mismatch, not bad luck. Dial in the basics:
Looking for crocosmia masoniorum in general rather than its problems? Read the full crocosmia masoniorum care guide — light, water, soil and feeding.
Crocosmia masoniorum problems — FAQ
Why is my crocosmia masoniorum reduced flowering when congested?
Crowded corm colonies make foliage at the expense of flowers; lift and divide every few years to keep it blooming well.
Why is my crocosmia masoniorum spider mites in hot, dry spells?
Drought stress invites spider mites that mottle and bronze the broad leaves; maintain moisture and hose the foliage.
Why is my crocosmia masoniorum corm rot in cold, wet winters?
Hardy but not bulletproof, it can lose corms in waterlogged winter soil; mulch in cold areas and ensure good drainage.
Why is my crocosmia masoniorum spreading clumps?
Corms multiply and the clump expands steadily; divide to control spread and refresh vigour where space is limited.