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Divide spring-flowering perennials like coneflower, Indian blanket, and yarrow.
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Keep an eye out for vegetable insects. Apply Bt to cabbage loopers on blue-leaf crops, like cabbage, broccoli, and kale.
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Continue planting wildflower seeds.
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Get spring-flowering bulbs to plant in a few weeks in the garden or to force indoors.
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Get ready to move your outdoor plants in. Drench them with diluted orange oil or soap to kill any pests that want to come in, too.
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Continue planting your food garden.
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Plant trees, shrubs, perennials and herbs. Now’s the best time to plant everything, except tropicals.
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Mulch marginally cold-hardy plants.