Troubleshooting
Crocus tommasinianus 'Ruby Giant' problems — and how to fix them
Crocus tommasinianus 'Ruby Giant' (Crocus tommasinianus 'Ruby Giant') 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.
Corm rot in heavy wet soil
Despite its drought tolerance, summer waterlogging rots corms. Plant in sharp-draining ground and keep dormant bulbs dry.
Spreads more than intended
Vigorous offsetting and naturalising can colonise a lawn quickly. Welcome in wild plantings; lift and thin if you need to contain it.
Flowers closed in dull weather
Blooms open only in sun and warmth, staying shut on grey late-winter days. Plant in the sunniest available spot for the longest display.
Sparse flowering in shade
Too much shade thins the show and slows spread. Site under deciduous cover or in open ground that gets early-season sun.
Prevent crocus tommasinianus 'ruby giant' problems before they start
Most crocus tommasinianus 'ruby giant' issues are care-mismatch, not bad luck. Dial in the basics:
- Common tommies crocus problems — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Crocus tommasinianus 'Ruby Giant' watering schedule
- Crocus tommasinianus 'Ruby Giant' light requirements
- Best soil mix for crocus tommasinianus 'ruby giant'
- Crocus tommasinianus 'Ruby Giant' temperature & humidity
- Full crocus tommasinianus 'ruby giant' care guide
Looking for the species overview? Crocus — the full care guide.
Crocus tommasinianus 'Ruby Giant' problems — FAQ
Why is my crocus tommasinianus 'ruby giant' corm rot in heavy wet soil?
Despite its drought tolerance, summer waterlogging rots corms. Plant in sharp-draining ground and keep dormant bulbs dry.
Why is my crocus tommasinianus 'ruby giant' spreads more than intended?
Vigorous offsetting and naturalising can colonise a lawn quickly. Welcome in wild plantings; lift and thin if you need to contain it.
Why is my crocus tommasinianus 'ruby giant' flowers closed in dull weather?
Blooms open only in sun and warmth, staying shut on grey late-winter days. Plant in the sunniest available spot for the longest display.
Why is my crocus tommasinianus 'ruby giant' sparse flowering in shade?
Too much shade thins the show and slows spread. Site under deciduous cover or in open ground that gets early-season sun.