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Crocus, Snow Crocus, Species Crocus 'Firefly'

Crocus sieberi subsp. atticus

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



Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Suitable for growing in containers


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:

Unknown - Tell us

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


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

show all

Gardeners' Notes:


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 bulbsdirect.com 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 ... read more


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.


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

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