Photo by Melody

PlantFiles: Crocus, Snow Crocus, Species Crocus
Crocus sieberi subsp. atticus 'Firefly'

Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Crocus (KROH-kus) (Info)
Species: sieberi subsp. atticus
Cultivar: Firefly

Synonym:Crocus sieberi

One vendor has this plant for sale.

4 members have or want this plant for trade.


under 6 in. (15 cm)

3-6 in. (7-15 cm)

USDA Zone 3a: to -39.9 C (-40 F)
USDA Zone 3b: to -37.2 C (-35 F)
USDA Zone 4a: to -34.4 C (-30 F)
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)

Sun Exposure:
Full Sun
Sun to Partial Shade


Bloom Color:
Gold (Yellow-Orange)

Bloom Time:
Late Winter/Early Spring


Other details:
Average Water Needs; Water regularly; do not overwater
Suitable for growing in containers

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:
Unknown - Tell us

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

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There are a total of 13 photos.
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3 positives
No neutrals
No negatives

Gardeners' Notes:

Positive themikeman On Feb 5, 2011, themikeman from Concord, NC (Zone 7a) wrote:

'Firefly' Snow Crocus, was developed my Mr. M. Thoolen of Overveen, The Netherlands, where it is the single most popular crocus of its species due to it's bright glowing color, and hardy shade tolerant characteristics. I just bought 80 bulbs this November from and they sent them to me from the Netherlands for free within 4 days no shipping cost and altogether the bulbs were under 20 bucks!!! They are already blooming for me now this first week of February 2011 here in NC. I put 40 around the base of a crape myrtle coming up my drive way and the other 40 up around another crapemyrtle at the top of the driveway 10 feet away. For more detailed info about the creating of, and caring for and history of firefly snow crocus in the spring garden, please visit

Positive Leehallfae On Nov 9, 2006, Leehallfae from Seattle, WA wrote:

For the Seattle area, which is zone 8a to 8b, Crocus are an easy care flower.

Get them in the ground by the end of November.

They look nice planted alongside Eranthis (Winter Aconite)., Hyemalis.

Positive ladyrowan On Sep 22, 2005, ladyrowan from Garberville, CA (Zone 9a) wrote:

Nearly white exterior with a pale violet interior and a yellow heart.


This plant has been said to grow in the following regions:

Little Rock, Arkansas
Garberville, California
Denver, Colorado
Clinton, Connecticut
Blissfield, Michigan
Dearborn Heights, Michigan
Concord, North Carolina
Cincinnati, Ohio
Seattle, Washington

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