Cultivars available in Canada
B-18
90 to 100 days; orange skin, yellow flesh; excellent flavour (especially immediately after harvesting); good yield, large number of small-to medium-sized tubers; may have better resistance to chilling injury
‘Carver'
100 days; copper-coloured skin, orange flesh; excellent taste; very good yield; stores well
‘Frazier White'
105 days; skin and flesh are white; excellent yield, small to medium size; stores well
‘Georgia Jet'
90 to 100 days; pink skin, deep orange flesh; very good taste; excellent yield, small to medium size; stores well; good for regions with cool, short seasons
Japanese (a.k.a. Japanese yam)
120 days; burgundy skin, white flesh; dryish texture with a sweet taste; medium yield and size; stores well
Korean Purple
100 days; purple skin, white flesh; milder and less sweet than other varieties, subtle clove-like undertone; excellent yield; stores well
‘Regal'
110 days; red skin, orange flesh; rich, sweet taste, excellent for baking; very good yield, large tubers; average storage length
‘Superior'
100 to 110 days; copper-coloured skin, orange flesh, striking ivy-like foliage; good, sweet taste, slightly mild; very good yield; stores well
Tainung 65
90 to 100 days; red skin, yellow, flesh, drier, firmer and milder than others; very good yield, large tubers; excellent storage; good for regions with cool, short seasons
‘Toka Toka Gold' (a.k.a. ‘Golden Kumara')
90 to 100 days; yellow skin, deep yellow flesh with orange streaks; sweet but slightly dry; medium yield, large size, good for baking