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Woodland crocus

Crocus tommasinianus (KROH-kus tom-ma-si-nee-AY-nus)

Family: Iridaceae Non-native Groundcover (<1 ft)

Snow Crocus is a late winter to early spring blooming bulb native to southeastern Europe. It is one of the first to pop its leaves above the ground and can bloom when there is snow on the ground, hence the common name. Plant them 3 to 4 inches deep and 3 to 4 inches apart in average well-drained soils. They prefer sandy soils and do not do well in poorly drained clay soil. They perform best in full sun but tolerate partial shade. The lavender looms will appear in the morning, closing in the evenings and they will remain closed on cloudy days. Mass plant them along walkways, in front of trees or shrubs in woodland or rock gardens, or let naturalize in a lawn. If planted in a lawn wait until the leaves turn yellow before mowing. They tuck into small spaces well and really bring some interest to a garden after the long sleep of winter. They tolerate browsing from deer and the allelopathic chemicals of black walnut. It is reportedly resistant to foraging by squirrels as well. Insects, Diseases, and Other Plant Problems: No significant problems. Squirels and mice can be problematic although less so than others of the genus.

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 35 attributes.

How it fits the guild

Guild layer 5 - Groundcover (<1 ft)
See companions & conflicts ↓

Companions & Conflicts

Curated pairwise relationships between this plant and others in the library — who feeds whom, who competes, who confuses the pests. Green reads as a good pairing, red as one to avoid.

No curated interactions recorded for this species yet.

Also noted by NC State

Related species the NC State Plant Toolbox flags for this plant — look-alikes to tell apart, and plants that play a similar role in a planting. Ones we carry in the library are linked.

Fills a similar niche Eranthis hyemalis Iris reticulata Iris reticulata 'Harmony'

Full plant profile

Growing Conditions
Plant type
Bulb; Herbaceous Perennial
Life cycle
Bulb
USDA zones
3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b
Light
Full sun (6 or more hours of direct sunlight a day) | Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Soil texture
Sand
NC region
Coastal; Mountains; Piedmont
Mature size
Height: 0 ft. 4 in. - 0 ft. 6 in. | Width: 0 ft. 4 in. - 6 ft. 0 in.
Maintenance
Low
Canopy layer
5 - Groundcover (<1 ft)
Form & Appearance
Habit / form
Clumping
Leaf color
Green
Leaf type
Simple
Leaf arrangement
Rosulate
Leaf shape
Linear
Leaf margin
Entire
Hairs present
No
Leaf detail
3-5 basal strappy green leaves
Flower color
Purple/Lavender; Red/Burgundy
Flower value
Showy
Flower detail
Lavender to red purple 6 petaled flowers with white throats appear from late winter to early spring.
Bloom time
Spring; Winter
Wildlife & Ecology
Native status
Non-native
Origin
Europe
Landscape Use
Landscape location
Lawn; Walkways; Woodland
Landscape theme
Rock Garden; Winter Garden
Design feature
Mass Planting
Garden tags
#showy flowers #rock garden #naturalizes #flowers early spring #low maintenance #winter interest #squirrel resistant #purple flowers #mass planting #flowers late winter #small spaces #woodland #walkway
Problems & Resistance
Resistant to
Black Walnut; Deer

Planted at Hunnicutt

Nobody’s planted this one yet.