​Common Peach Diseases and Insects and How to Prevent Them

Peaches are very susceptible to several diseases and insects that can spoil the harvest or even kill the tree. Retired UT Extension Agent Mike Dennison talks about the most common diseases and insects of peach.
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UT Home orchard spray guide:
https://ag.tennessee.edu/EPP/Redbook/Home%20fruit%20spray%20guide%20PB1622.pdf

Related Videos:
Spraying Peach Trees
Pruning Nectarines, Peaches, and Plums

Related Resources:
Disease and Insect Control for Homegrown Peaches and Plums
Peach/Nectarine Pests
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Viewer Questions


What are these spots on the leaves of my peach tree?

This is bacterial spot. Retired UT Extension Agent Mike Dennison says you can tell it is bacterial in nature because it has a purple tint to it. As the spot develops the center of the spot will fall out leaving a hole in the leaf. He does not recommend treating with a chemical as the leaves can tolerate the damage with no adverse effects.  >>Watch

Do I have to mix fungicides and insecticides when spraying?

You do not have to mix fungicides and insecticides when spraying. You can spray them separately. Retired UT Extension Agent Mike Dennison says people usually spray them together if necessary to save time. >>Watch



​What can I do to get rid of eastern tent caterpillars?

Eastern tent caterpillars build webs on cherry and plum trees every spring. Retired UT Extension Agent Mike Dennison says there are many insecticides labeled to control the eastern tent caterpillar, but he recommends using Bt or Bacillius therengisis. This insecticide is organic and non-toxic to humans. Bt works best on younger caterpillars.  >>Watch

My newly sprouted beans are yellow. Can a nitrogen deficiency show this early?

Even though beans are legumes they can still show a nitrogen deficiency. Retired UT Extension Agent Mike Dennison says the plants require a certain bacteria in the soil to make the nitrogen for them. If that bacteria is not present the plants won’t have enough nitrogen. The beans will grow out of it as the season progresses.  >>Watch



​What disease causes oozing from peaches?

A clear gummy substance oozing from a peach is caused by the oriental fruit moth. This insect pest can be controlled by a regular application of insecticides as part of a cover spray program.  >>Watch

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