In northern areas, a thick layer of mulch may keep your sunchokes accessible longer, but may also encourage mice or voles to move in and have a snack.įor bigger roots, make sure your plants don’t get too crowded, and ensure they get watered regularly. They keep best in the ground, dug as needed for use. I have kept them in container in the refrigerator for a couple of weeks. They have a thin skin and dry out easily. Unlike potatoes and some other root crops, sunchokes cannot be cured and stored. Light frost increases the sweetness of the tubers. They require 110 -150 days to maturity, depending on the variety and growing conditions. Sunchokes are harvested in late fall or early spring. Plant in a dedicated bed that can be mowed around for control, or sink barriers into the soil around the sunchokes at least 24 inches deep to prevent spreading.Cover your soil with an inch or so of organic mulch for easier harvesting and root protection.pH of soil best between 5.8 and 6.2 (neutral soil).Plants are drought tolerant, but produce best will a regular supply of water. Do not plant in areas that are consistently wet, as wet soil will rot the tubers.Soil temperature at planting should be at least 50F.Space rows 4-6 feet apart (they will be prone to spreading).Space sunchoke tubers 12 to 18 inches apart, 4 to 6 inches deep. ![]()
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