PROPERTIES
In general, 40-0-0 fertilizer is good for plants that thrive in alkaline soil. 40-0-0 fertilizer is also good for many shrubs and perennials.These include azaleas, blueberries, crape myrtles, hydrangeas, magnolias, and rhododendrons.When fertilizing these plants, it’s best to apply the fertilizer in early spring because they tend to grow a lot during that time of year.

