Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Crocus (KROH-kus) (Info)
Species: x luteus
Cultivar: Yellow Mammoth
Additional cultivar information: (aka Golden Yellow, Dutch Yellow, Golden Mammoth, Large Yellow, Mammoth Yellow)
Synonym:Crocus x stellaris
Synonym:Crocus flavus
 5 vendors have this plant for sale.
5 members have or want this plant for trade. Category:
Alpines and Rock Gardens
Bulbs
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)
Sun Exposure:
Sun to Partial Shade
Light Shade
Danger:
All parts of plant are poisonous if ingested
Bloom Color:
Gold (Yellow-Orange)
Bloom Time:
Late Winter/Early Spring
Mid Winter
Foliage:
Herbaceous
Variegated
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
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