Crocus, Snow Crocus, Species Crocus 'Firefly'

Crocussieberi subsp. atticus

Family
Iridaceae (eye-rid-AY-see-ee)
Genus
Crocus (KROH-kus)
Synonym
Crocus sieberi
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Herbaceous
Height
under 6 in. (15 cm)
Spacing
3-6 in. (7-15 cm)
Hardiness
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)
Danger
N/A
Bloom Color
Gold (yellow-orange)
Lavender
Silver/Gray
Bloom Time
Late Winter/Early Spring
Other Details
Category
Bulbs
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Can be grown as an annual
Bloom Characteristics
Bloom Size
Other details
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
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
Regional

This plant is said to grow outdoors in the following regions:

Little Rock, Arkansas

GARBERVILLE, California

Denver, Colorado

Clinton, Connecticut

Blissfield, Michigan

Dearborn Heights, Michigan

South Ozone Park, New York

Concord, North Carolina

Cincinnati, Ohio

Seattle, Washington

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Gardener's Notes:

4
positives
0
neutral
0
negative
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M
Corvallis, OR | June 2023 | positive

A winsome lilac with a drop of golden honey in its throat. Reliably the first crocus to bloom for us in Oregon's Willamette Valley, by th...Read More

T
Concord, NC (Zone 7a) | February 2011 | positive

'Firefly' Snow Crocus, was developed my Mr. M. Thoolen of Overveen, The Netherlands, where it is the single most popular crocus of its sp...Read More

L
Seattle, WA | November 2006 | positive

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 Novembe...Read More

L
Garberville, CA (Zone 9a) | September 2005 | positive

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

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