5/5/2023 0 Comments Broccoli seedlingsImported cabbage worms are velvety green caterpillars. Common ProblemsĪphids - Watch for buildup of colonies of aphids on the undersides of the leaves.įor more information on aphids, see our feature in the Bug Review.Ĭabbage worms - Three species of cabbage worms (imported cabbage worms, cabbage loopers and diamond back moth worms) commonly attack the leaves and heads of cabbage and related cole crops. You usually can continue to harvest broccoli for several weeks. These side shoots grow from the axils of the lower leaves. Removing the central head stimulates the side shoots to develop for later pickings. Cut the central head with 5 to 6 inches of stem, after the head is fully developed, but before it begins to loosen and separate and the individual flowers start to open (show bright yellow). The green buds develop first in one large central head and later in several smaller side shoots. The edible part of broccoli are compact clusters of unopened flower buds and the attached portion of stem. Provide ample soil moisture, especially as the heads develop. Use starter fertilizer for transplants and side-dress with nitrogen fertilizer when the plants are half grown. Space plants one foot apart in all directions in beds. Broccoli plants grow upright, often reaching a height of 2 1/2 feet. Plant or thin seedlings 18 to 24 inches apart in the row and allow 36 inches between rows. Plant seeds 1/4 to 1/2 inch deep, or set transplants slightly deeper than they were grown originally. Remember that time from seed to transplant is not included in this figure. To determine the best time for setting your fall transplants, count backward from the first fall frost in your area and add about 10 to the days to harvest from transplants. For fall planting, start seedlings in midsummer for transplanting into the garden in late summer. For fall crops, buy or grow your own transplants or plant seeds directly in the garden. Plants that remain too long in seed flats may produce "button" heads soon after planting. Transplant young, vigorously growing plants in early spring. Green Goliath (60 days spring, summer or fall tolerant of extremes) When to Plant Green Comet (55 days early heat tolerant) Recommended VarietiesĬruiser (58 days to harvest uniform, high yield tolerant of dry conditions) Fall crops may be direct-seeded in the garden if space allows or may be started in flats to replace early crops when their harvest ends. Thus they can bear their crop with minimal interference from the extreme heat of early summer. Transplants are recommended to give the best start for spring planting, because transplanting gets the plants established more quickly. New heat tolerant varieties allow broccoli to be produced in all but the hottest parts of the season. Two crops per year (spring and fall) may be grown in most parts of the country. Side heads develop after the large, central head is removed. When broccoli plants of most varieties are properly grown and harvested, they can yield over an extended period. It develops best during cool seasons of the year. Broccoli is a hardy vegetable of the cabbage family that is high in vitamins A and D.
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