12/26/2023 0 Comments Download free pruning plum trees![]() ![]() Begin dormant pruning after February 1 to reduce bacterial canker infection. After the first growing season, heading cuts should be avoided. Thinning cuts that favor (i.e., leave) outward-growing branches are necessary to “spread” the plum’s upright tree form so that sunlight can penetrate the inner canopy and enhance fruit spur production. Plums are dormant-pruned slightly differently than peaches. Be careful not to concentrate the fertilizer near the trunk of the tree. August application – Apply 1 cup of calcium nitrate or ammonium nitrate (equivalent) per tree per year of tree age to a maximum of 6 cups for mature trees.Īlways broadcast the fertilizer in a circle at least as large as the circle created by the limbs.March application – Apply 1 cup of 10-10-10 for each year of tree age to a maximum of 12 cups for mature trees.Use these rules of thumb for the two fertilizer applications: Make the first application in early March and the second around the first of August. Apply additional nitrogen in mid-May and mid-July by applying a half-cup of calcium nitrate or ammonium nitrate evenly over an area 2 feet in diameter.īeginning the second year, fertilize the trees twice annually. Broadcast one cup of 10-10-10 fertilizer over an area 3 feet in diameter. Fertilizationįertilize newly planted plum trees in early spring before leaves appear. Wait at least six weeks after planting to fertilize. Do not place fertilizer in the planting hole or fertilize immediately after planting. In the fall prior to planting, prepare the area by soil testing and incorporating lime as needed to achieve a soil pH between 6.0 and 6.5. Avoid areas where root-knot nematodes have been a problem. They will grow in a wide variety of soil types, but prefer deep, well-drained soil ranging in texture from a sandy loam to a sandy clay loam. Plums should be planted 18 to 22 feet apart. ![]() ![]() ![]() For example, two varieties of European plums can cross-pollinate, but European plums cannot cross-pollinate with Japanese varieties. Plums need to be pollinated by another variety of the same type of plum. While peaches are self-fruitful, many plums are self-unfruitful. However, there is one major difference between the two. They are related to peaches, and the production practices for these two fruits are very similar. Plums can be divided into three types: European (including the Damson), Japanese and indigenous American species. ![]()
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