Answer: Blueberries thrive in rich, moist, acidic (4.5-5.5) soils. In the Pacific Northwest soil pH is generally low so you shouldn't have to worry about adjusting the pH to suit your plants--though it wouldn't hurt to have your soil tested just to be sure. Use an organic mulch under the plants to help hold in moisture and suppress weeds. Nitrogen is very important for healthy blueberries, so an annual application of cottonseed meal, dried manure, or a blended high-nitrogen organic fertilizer should be placed under the mulch of each plant. Use 1/2 to 1 pound per plant, depending on the size of the plant and how well it is growing.
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