Family: Ranunculaceae (ra-nun-kew-LAY-see-ee) (Info)
Genus: Clematis (KLEM-uh-tiss) (Info)
Species: x viticella (vy-tee-CHELL-uh) (Info)
Cultivar: Kasmu
Additional cultivar information: Signe (wrongly named)
Hybridized by Uno Kivistik, Estonia; Year of Registration or Introduction: raised 1987
Group:
Late Large-flowered
Height:
8-10 ft. (2.4-3 m)
Spacing:
15-18 in. (38-45 cm)
18-24 in. (45-60 cm)
Hardiness:
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)
Bloom Color:
Red
Purple
Flower Fragrance:
No fragrance
Bloom Shape:
Single
Flat
Bloom Diameter:
Medium - 2 to 5 inches (5 to 12 cm)
Large - 5 to 8 inches (12 to 20 cm)
Bloom Time:
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Sun Exposure:
Full Sun
Sun to Partial Shade
Other details:
Requires consistently moist soil; do not let dry out between waterings
Pruning Groups:
Group 3 - Summer/Fall bloomers; prune hard in early spring
Propagation Methods:
From softwood cuttings
Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
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