Botanical Name: Brassica rapa
Days to Maturity: 50 days
Native: Probably Eurasia
Hardiness: Frost-tolerant biennial, grown as an annual; will withstand light frost.
Plant Dimensions: 2″–6″ diameter roots. Greens are 14″–22″ tall with leaf blades 3″–5″ wide.
Variety Information: The globe-shaped roots have purple shoulders above ground and are creamy-white below the soil level.