The purple-leaved plum tree (Prunus cerasifera), also known as a cherry plum, is an ornamental landscape tree with dark purple foliage. This is a small, deciduous tree, growing from 15 to 28 feet in height. If planted in full sun, in slightly acidic soil, purple-leaved plums produce small, edible fruit. Purple plum trees are hardy to USDA zone 5, and need fertilizing every two years, in early spring.
Rake around the purple plum tree in a 3-foot radius. Rake up any mulch, leaves and other debris. Rake over the area again to loosen the top 1 inch of soil.
Scatter the fertilizer, at the rate suggested on the package, in a 3-foot radius around the tree. Use the rake to scratch the fertilizer into the top 1 inch of soil.
Water the soil until the top 4 inches is moist. This will help activate the fertilizer and allow it to seep into the soil.