How to Apply Ammonium Sulfate to Blueberries

Blueberries are easy to grow in the home garden, even if your garden consists of a balcony with a bunch of pots. They take up little room and have few requirements. The most important requirement to meet to be successful growing blueberries is to provide them with acidic soil. The pH should be between 4.5 and 5.1. Ammonium sulfate not only provides the blueberries with nitrogen but helps acidify the soil as well. Blueberries grow best in U.S. Department of Agriculture zones 4 through 8.

Mulch

Instructions

- 1
  Apply 1/2 lb. of ammonium sulfate per 100 feet of planting row to the soil one month after planting the blueberries. Use a gardening fork to mix the fertilizer into the top 10 inches of soil, six inches away from the base of the blueberry and spread out as wide as the plant.
- 2
  Increase the amount of ammonium nitrate to 1 to 1 1/2 lbs. per 100 feet of planting row in the blueberry bush's second year. Split this into two applications: the first when the plant blooms and the second four weeks later.
- 3
  Spread a 3-inch layer of mulch, such as pine straw or bark or leaves, over the fertilized area after application. Extend the mulch layer two feet beyond the base of the blueberry bush.

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