Blueberries require full sun exposure, acidic soil, and cross-pollination from planting multiple varieties. They are harvested from mid-June through July and require annual pruning of old canes. Ammonium sulfate is a 21-0-0 water soluble nitrogen fertilizer that creates a weak sulfuric acid, lowering the soil pH. It is recommended for use with acid-loving plants like blueberries, azaleas, and potatoes.
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