Answer: Cabbage is a biennial plant, meaning it grows foliage the first year, overwinters, and flowers the second year, then dies. Cabbage must undergo a period of cool temperatures (but not too cold) to flower. In your region, you would need to plant the seeds in the spring, carefully dig up the plants in the fall, overwinter them in a place that stays between 32F and 45F, and set them out in early spring. The plants would then send up a flower stalk that summer. The flower stalk will grow 3 to 4 feet tall, then branch out and produce seed pods.
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