Cynanchum Species, Japanese Rough Potato
Cynanchumjaponicum

Family: Apocynaceae (a-pos-ih-NAY-see-ee)
Genus: Cynanchum (sigh-NAN-chum)
Species: japonicum (juh-PON-ih-kum)

Synonym:Metaplexis chinensis

Synonym:Metaplexis japonica

Synonym:Metaplexis stauntonii

Synonym:Pergularia japonica

Synonym:Urostelma chinensis

Category
Vegetables
Perennials
Vines and Climbers

Water Requirements

Sun Exposure
Sun to Partial Shade
Light Shade

Foliage
Deciduous

Foliage Color

Height
15-20 ft. (4.7-6 m)
20-30 ft. (6-9 m)

Spacing

Hardiness
USDA Zone 6b: to -20.5 °C (-5 °F)

Where to Grow

Danger
Parts of plant are poisonous if ingested

Bloom Color
Pink

Bloom Characteristics

Bloom Size

Bloom Time
Mid Summer
Late Summer/Early Fall

Other details

Soil pH requirements

Patent Information

Propagation Methods
From seed; sow indoors before last frost

Seed Collecting