Hardiness: USDA Zone 4b: to -31.6 °C (-25 °F) USDA Zone 5a: to -28.8 °C (-20 °F) USDA Zone 5b: to -26.1 °C (-15 °F) USDA Zone 6a: to -23.3 °C (-10 °F) USDA Zone 6b: to -20.5 °C (-5 °F) USDA Zone 7a: to -17.7 °C (0 °F) USDA Zone 7b: to -14.9 °C (5 °F) USDA Zone 8a: to -12.2 °C (10 °F) USDA Zone 8b: to -9.4 °C (15 °F) USDA Zone 9a: to -6.6 °C (20 °F) USDA Zone 9b: to -3.8 °C (25 °F) USDA Zone 10a: to -1.1 °C (30 °F)
Sun Exposure: Full Sun
Danger: Parts of plant are poisonous if ingested Handling plant may cause skin irritation or allergic reaction
Bloom Color: Pale Yellow Light Blue
Bloom Time: Late Winter/Early Spring Mid Spring
Foliage: Herbaceous Smooth-Textured
Other details: Average Water Needs; Water regularly; do not overwater
Soil pH requirements: 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline)
Patent Information: Non-patented
Propagation Methods: By dividing rhizomes, tubers, corms or bulbs (including offsets)
Seed Collecting: N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
On Aug 4, 2007, PhilsFlowers from Ocean Park, Surrey, BC (Zone 6b) wrote:
These little flowers are so welcome in mid-winter because they are the first bulbs to bloom and you know that no matter how cold it is, spring is not far away. Taking pictures of it is frustrating because the true color is never seen in the photo, you will have to grow your own to appreciate it. It is the palest and most delicate shade of blue there is.
A needed reminder that spring is on the way in Zone 5a/b. As of this posting I have not seen any flowers or buds yet, however the first few sunny, warm days will bring these little blooms out in no time. Easily grown here; very hardy; nice lawn ornamental. Color is almost pure white except the faint blue shades which must be closely observed to be seen.
On Mar 4, 2006, ineedacupoftea from Denver, CO wrote:
A nice little early blooming cultivar. I think it needs to be in numbers for the subtle color to really have any effect. If added to a mixture, it assumes the appearance of white. There is a darker blueish spot at the tepel's outside base.
One of the first plants to emerge and often times doing so while there is still snow on the ground. Mason bees as well as introduced Italian honey bees are attracted to this plant as little else is in bloom at the time.
To the best of my knowledge, it is hardy down to zone 3a in that it can survive very cold winters down to -40F.
The plant is an introduced species to North America in that its native range is Southern Europe and Asia. Crocus have naturalized in some states so best to keep an eye on it.
It prefers well drained soils and requires high summer temps. It does not tolerate drought or high humidity. It doesn't attract any butterflies or hummingbirds BUT deer seem to really love it.
Bears slim, linear to lance shaped, mid-grey green leaves with a clear white stripe down the middle. Bears bowl shaped flowers with a yellow centre, the outside of the petals are a pale greyish blue, inside they are almost white.
Flowers between February to April
Loves a well drained soil in full sun. Dislikes waterlogged soils but grows ok on our clay soil. This one doesn't seem to multiply as well as the other cultivar Crocus we grow.
Won't come true from seed.
This plant has been said to grow in the following regions:
Chugiak, Alaska Garberville, California Clifton, Colorado Hawkinsville, Georgia Macy, Indiana Hebron, Kentucky Minneapolis, Minnesota Rochester, New York Southold, New York Coshocton, Ohio Toledo, Ohio West Valley City, Utah