Consult the local nursery to find the best fertilizer for your fruit tree. Select a fertilizer specifically made for fruit bearing plants, such as 0-10-10 or 15-30-15. The numbers reveal the amount of nitrogen, phosphorous and potassium present in a specific fertilizer.
Mark a line on the soil around the tree, corresponding to the outward edges of the branches, and apply the fertilizer around this line.
Using a trowel, mix the fertilizer into the soil.
Cover the soil with mulch and compost to keep it from drying out at the surface. Keep the mulch at an ample distance (6 to 8 inches) from the tree stem to allow maximum air circulation.
Liberally water the soil with a garden hose. This will move the fertilizer deep into the soil, making it easy for the roots to pick it up.