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What Are the Benefits of Planting Brassicas After Legumes?

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    What do Brassicas and Legumes Need From the Soil?

    • Brassicas use a lot of nitrogenbroccoli image by Maria Brzostowska from Fotolia.com

      The beginning gardener needs to learn what plants go in which groups. The most common vegetable in the legume family is the bean plant. Peas, lentils, alfalfa and clover are also legumes. These plants move nitrogen into the soil. This means that they enrich the soil like a fertilizer. Brassicas include broccoli, cabbage, kale, brussels sprouts, kohlrabi and cauliflower. Brassica plants often require large amounts of nitrogen, so it makes sense to plant brassicas after legumes.

    Succession Planting in the Organic Garden

    • Pea plants enrich the soil with nitrogengreen peas in a purple pea pod image by hazel proudlove from Fotolia.com

      The typical companion planting crop rotation occurs in a three-year or a five-year rotation. This depends on the number of garden beds you have available, since many people do not have five beds available for vegetables.

      In a three-bed system, plant legumes like peas and beans to enrich the soil with nitrogen. After that, you can plant light feeders like carrots, parsnips, or other plants in the umbelliferae family. Then you can plant brassicas like broccoli and cabbage in the bed. They will use up the nitrogen that the legumes left behind. Next year, plant legumes in the plot that the brassicas just left to replenish the soil once again. If you have two garden beds, alternate between heavy feeders like brassicas and plants that enrich the soil, like legumes.

    Succession Planting Avoids Pests

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