Genus guide
Crocus — 16 species
Part of the Irises & crocuses family (Iridaceae)
Crocus is a corm-forming genus in the Iridaceae family, spanning roughly 90 species of late-winter and spring bloomers — from the familiar spring crocus (C. vernus) to the delicate Sieber's and Tommies types. They perform best in full sun with at least six hours of direct light, planted in sharply drained, gritty soil; the corms rot quickly in waterlogged ground and need only modest moisture during active growth. All Crocus are toxic to cats and dogs: spring species cause gastrointestinal upset, while autumn-blooming types (containing colchicine) pose a severe risk of multi-organ failure and should be treated as a veterinary emergency.
All Crocus species we cover
- Autumn Crocus
- Autumn Crocus Speciosus
- Crocus
- Crocus 'Jeanne d'Arc'
- Crocus 'Pickwick'
- Crocus chrysanthus 'Cream Beauty'
- Crocus sativus
- Crocus tommasinianus 'Ruby Giant'
- Dwarf Crocus
- Golden Crocus
- Naked Crocus
- Pretty Crocus
- Sieber's Crocus
- Sieber's Crocus
- Tommies Crocus
- Yellow Crocus
Crocus — frequently asked questions
Are Crocus plants toxic to cats and dogs?
Most Crocus are not pet-safe. Of the 16 Crocus species in the Growli library, 16 (100%) carry a toxic or mildly-toxic ASPCA classification and 0 are pet-safe. Always confirm the exact species on its pet-safety page before trusting it around cats or dogs.
How much light do Crocus plants need?
Most Crocus do best in direct sun. If yours stretches toward the window or loses its variegation it wants more light; scorched or bleached leaves mean it is getting too much direct sun.
Are Crocus easy to care for?
Some Crocus suit more experienced growers — several want strong light, sharp drainage or a specific seasonal rhythm. Check the individual species page for the exact regime.
How many Crocus varieties are there?
Growli's care library covers 16 Crocus species and varieties — browse them all above. They share a similar light, water and soil pattern, so once you learn one Crocus, the rest follow closely.
Comparing apps rather than plants? PictureThis alternatives — 7 plant ID apps compared.