Learning the environmental factors that can affect your orchard will help.

Several fungal diseases can cause apple trees to lose their leaves.

Apple scab causes olive green or black spots on the leaves. Leaves eventually drop from the tree. Rust causes orange spots on the leaves.

To apply mulch, place inches around the drip line of your apple tree.

The infested leaves will eventually drop from the tree. The alternate host for this tree is the evergreen red cedar (Juniperus virginiana). This may have been the"pine tree" your experienced.

A shortage of nutrients can cause leaves to not develop properly. In this case, leaves will gradually yellow and fall off.

If you cut down any tree, remove the stump to ensure the spores do not spread.

Like most plants, the main nutrients that apple trees need are nitrogen, phosphorus, and potassium (NPK). However, the primary nutrient that causes leaves to yellow is a lack of nitrogen.