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Aug 18, Early yellowing of tree leaves is usually an indication of problems. Possible causes are: 1) Overwatering can cause yellowing. This could be due to a variety of reasons, but one example is that cherry trees planted in lawns tend to get too much water.

We have a page dedicated to identifying and treating organic and chemical methods aphids which can be found here.

If this is your problem, stop watering the lawn near the tree. Cherry leaf spot is caused by Coccomyces hiemalis. Spots on the leaves, 1 to 3 mm in size, become yellow progressing to brown, and heavily affected leaves turn yellow and fall. Trees can be completely bare by midsummer if the infection is severe. The fungus survives in fallen leaves, so leaf removal can help prevent infection.

Yellowing leaves may be a sign the weeping cherry tree has a nitrogen deficiency.

Other symptoms of nitrogen deficiency included new leaves emerging smaller and thinner than previous leaves and. Aug 19, It is possible you may be referring to cherry shot hole, a fungal disease on the cherry tree.

You may notice yellow leaves with reddish brown spots. The fungus overwinters on fallen leaves, and good control can be achieved by raking and removing all cherry leaves from the planting area. The fungus produces small purple spots on the upper surface of the leaves. Eventually the spots turn reddish brown. After several weeks, the centers of the spots may drop out, producing a “shot-hole” appearance.

Affected leaves often turn yellow and drop prematurely. Cherry leaf spot occurs on both sour and sweet cherries in Iowa. Cherry leaf spot is caused by Coccomyces hiemalis. Spots on the leaves, 1 to 3mm in size, become yellow progressing to brown, and heavily affected leaves turn yellow and fall. Trees can be completely bare by midsummer if the infection is severe. The fungus survives in fallen leaves, so leaf removal can help prevent infection.