High temperatures can result in heat stress for your trees.

Several pests can cause leaves to wilt and yellow.

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Before treating for a pest make sure it is not an environmental factor causing the problem. Check the soil moisture and make sure the tree is receiving adequate water. Too much or not enough water can cause wilting and leaves to drop. Even established trees suffer during extremely hot and droughty summers.

A jolt of fertilizer at planting time is too harsh for a young, newly planted plum tree and can burn the leaves, causing them to turn yellow and then brown. Clemson Cooperative Extension experts suggest the following fertilization regimen: Wait until the following spring (or late winter) -- when the leaf buds begin to open -- before applying 1 cup of a granular fertilizer in a 3-foot diameter around each tree.

Jan 05, Listed below are the most common reasons for a plum losing leaves: Nutrient deficiencies – Nutrient deficiencies such as a boron, iron, manganese, sulfur or nitrogen, may contribute to the plum pruning rose bushes late summer leaves falling off.

Stone fruit trees need nitrogen, potassium and phosphorus. Jun 22, HIGH TEMPERATURES. High temperatures can result in heat stress for your trees. This causes leaves to turn yellow and then drop, as trees are water-stressed and cannot provide or maintain the energy needs of their leaves.

Early identification and treatment of heat stress go a long way toward helping them stumppruning.barted Reading Time: 8 mins.