How Long Does It Take To Grow Purple Potatoes?

How Long Does It Take To Grow Purple Potatoes? Most purple potato varieties grow as early, midseason or late-season varieties. Early types, like “Caribe,” require 70 to 90 days to reach full maturity. Late-season varieties, such as “AC Domino,” need 110 to 130 days to reach maturity from planting. How do you grow purple potatoes?