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PlantSnap
Plant Care
Boissier's autumn crocus
(Colchicum boissieri)
Also Known As
Boissier's autumn crocus, Boissier's colchicum
About This Plant
Colchicum boissieri is a species of flowering plant in the Colchicaceae family. It is a perennial herbaceous geophyte that grows from a corm and produces pale pink flowers in the autumn without the presence of leaves. The plant is toxic and contains colchicine, which has been used in medicine to treat gout and other conditions.
Plant Care Instructions
Outdoor Size Range
6-8 inches (15-20 cm)
Light Requirements
Colchicum boissieri prefers full sun to partial shade. It can tolerate shade, but it may not flower as well.
Humidity Needs
Colchicum boissieri does not have any specific humidity requirements.
Fertilizing Schedule
Fertilize the plant in the spring with a balanced fertilizer. Do not fertilize after the plant has finished flowering.
Pruning Guidelines
The plant does not require pruning, but you may remove the spent flowers and leaves after they have died back naturally.
Common Pests and Diseases
Colchicum boissieri is generally not affected by pests or diseases, but it may be susceptible to bulb rot if the soil is too wet.
Indoor Size Range
N/A
Watering Schedule
During the growing season, water the plant regularly to keep the soil moist but not waterlogged. Reduce watering after the plant has finished flowering and allow the soil to dry out slightly before watering again.
Temperature Range
The plant prefers cool temperatures and can tolerate frost. It is hardy to USDA zones 5-9.
Growing Season
The plant blooms in the autumn, typically in September or October.
Growing Difficulty Level
Colchicum boissieri is relatively easy to grow and care for, but it requires a period of cold dormancy in the winter. It is best planted in the fall and left undisturbed for several years.
USDA Hardiness Zones
Hardy to USDA zones 5-9.
Did You Know?
The plant is commonly known as the 'naked lady' because it produces flowers without leaves.
