In warmer climates, it's easier to tell when purple sweet potatoes are ready to harvest because their vines will yellow and die back. If you live in a cooler climate, harvest time will be shortly before the first fall frost (as early as 90 days, and as many as 120 days). 8 нояб. 2020 г.
Do you need to cure purple sweet potatoes?
Much like all sweet potato varieties, purple types need to be cured before long-term storage. Brush off excess soil with your fingers, but do not wash or rinse the harvested tubers.
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