Species Crocus, Autumn Crocus, Fall Crocus
Crocus speciosus
| Family: | Iridaceae (eye-rid-AY-see-ee) (Info) |
| Genus: | Crocus (KROH-kus) (Info) |
| Species: | speciosus (spee-see-OH-sus) (Info) |
| Synonym: | Crocus multifidus |
Category:
Bulbs
Water Requirements:
Average Water Needs; Water regularly; do not overwater
Sun Exposure:
Full Sun
Sun to Partial Shade
Foliage:
Foliage Color:
Blue-Green
Height:
under 6 in. (15 cm)
Spacing:
3-6 in. (7-15 cm)
6-9 in. (15-22 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)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
Where to Grow:
Danger:
All parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction
Bloom Color:
Blue-Violet
Lavender
Bloom Characteristics:
Bloom Size:
Bloom Time:
Mid Fall
Other details:
Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
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
Regional
This plant is said to grow outdoors in the following regions:
GARBERVILLE, California
Littleton, Colorado
Washington, Illinois
Olathe, Kansas
Thompsonville, Michigan
Croton On Hudson, New York
Ithaca, New York
New York City, New York
Wake Forest, North Carolina
Pembina, North Dakota
Fort Jennings, Ohio
Coos Bay, Oregon(2 reports)
Wilkes Barre, Pennsylvania
Broaddus, Texas
Spokane, Washington
show allGardeners' Notes:
| Rating | Content |
|---|---|
| Neutral | On Nov 4, 2015, coriaceous from ROSLINDALE, MA wrote: A beautiful addition to the garden, though their season of bloom is brief (under 2 weeks). Flowers tend to topple fairly quickly, like Colchicum. Perhaps growing them through a low groundcover like Vinca minor would help. |
| Positive | On Nov 2, 2015, tinyrubies from Coos Bay, OR (Zone 8b) wrote: These are very reliable here in coastal oregon and naturalize well if left alone. Patches persist for many years. They are a harbinger of fall blooming here late august. |
| Neutral | On Apr 27, 2005, Kelli from L.A. (Canoga Park), CA (Zone 10a) wrote: The flowers are so pretty but the plants don't last here very long. In a couple years they all die out. |
| Positive | On Oct 27, 2002, philomel from Castelnau RB Pyrenées, An easy plant, welcomed for it's colour in the autumn. |
