Rose bushes and apple trees are distant cousins in the plant kingdom. If you observe roses closely, they will exhibit behavior similar to apple trees: producing an apple-like fruit, known as the rose hip, after flowering. Roses and apples even have the same nutritional needs. Select a fertilizer for both roses and apples that is high in phosphorous. Phosphorous encourages plants to produce blossoms, which leads to more fruit.
Scratch furrows into the earth in a circle at the edge of the roots surrounding your tree or bush.
Sprinkle slow-release granular fertilizer into the furrows in the amounts directed on the back of the package.
Sprinkle 1 cup of Epsom salts into the furrows.
Cover the furrows by raking over them with the rake again.
Use a shovel to cover the ground surrounding the tree or shrub with compost. Ring the tree or bush with compost starting 4 inches from the trunk and working outward. Spread the compost to a depth of 1 inch thick.
Rake the compost into the soil to a depth of 4 inches.
Water thoroughly with a garden hose.