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How to Fertilize Currants

Currant bushes produce an abundant supply of small red, black or white berries. The berries have a tart, sweet flavor that complements pies, jams and other baked goods. The berries ripen in middle to late summer on attractive shrubs. Currants provide both an ornamental landscape shrub as well as a fruiting plant. The shrubs are low maintenance, requiring only basic care to grow and produce well. Providing the necessary fertilization gives the plants the nutrients they need to produce a healthy crop of fruit.

Things You'll Need

  • Soil test kit
  • Ammonium nitrate fertilizer
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Instructions

    • 1

      Perform a soil test to determine nutrient needs in the bed the summer before planting new currant bushes. Soil test kits are available from garden centers and extension offices. Follow the testing instructions detailed for the specific kit; most kits require taking a soil sample and testing it via a strip system or by taking it to a lab.

    • 2

      Spread the initial fertilizer application in the bed one week prior to planting new currant bushes. Follow the application rates and fertilizer recommendation detailed in the soil test results for the initial application. Turn the fertilizer into the top 8 to 10 inches of the planting bed.

    • 3

      Sprinkle 2 tbsp. of ammonium nitrate fertilizer, a 36-0-0 fertilizer blend, around the trunk of each currant bush in an 18-inch circle one month after planting. Water the soil after fertilizing so the nutrients dilute and leach into the soil around the plant roots.

    • 4

      Apply 2 oz. of 36-0-0 fertilizer to each plant the second spring after planting in an 18-inch circle around the trunk. Apply the fertilizer when new growth first begins on the currant bushes.

    • 5

      Increase the 36-0-0 fertilizer each spring in 1 oz. increments until the fifth year. Fertilize 5-year-old or older bushes with a total of 5 oz. of 36-0-0 blend each spring.