When to Plant Transplant early cabbage soon enough that it matures before the heat of summer. Many varieties are available and two or three varieties with different maturities can provide harvest over a long period. Hardened plants are tolerant of frosts and can be planted among the earliest of cool-season garden vegetables. Cabbage is easily transplanted from either bare-root or cell-pack-grown plants. Late cabbage must be started during the heat of mid-summer, but it develops its main head during the cooling weather of fall. It may be transplanted or seeded directly in the garden. In summer, if possible, place seed flats or seedbeds where some protection from the sun is available, either natural or artificial. Try especially hard during this season to transplant on cloudy, overcast or rainy days for minimizing shock from the direct sun of summer.

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