Blueberry plants benefit from applications of fertilizer to replace nutrients the shallow roots use from the soil. The first step in fertilizing blueberries requires analyzing the soil in which you want to plant your bushes.
All blueberry plants require acidic soil with a pH ranging from 4.0 to 5.5. Soils with high pH benefit from an application of elemental sulfur. Soils lower in pH need an application of dolomitic lime.
To thrive and produce quality berries, blueberries sometimes need individual fertilizer elements such as nitrogen. For the home garden, an application of nitrogen often takes care of all of the plant’s needs. Some gardeners add phosphorus before setting the plants in the ground. Calcium and magnesium come in handy to correct any soil deficiencies.
A complete, balanced fertilizer of 16-8-8 works well when applied to young, individual plants. Balanced fertilizer formulas that contain 4 percent added magnesium also give the plants the nutrients they need. Applying fertilizer by hand or via an applicator suffices for older plants.