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Identification & Biology
Trees Gypsy Moths Like
How Gypsy Moths Harm Trees
Where Gypsy Moths Are
Gypsy Moth Management
Slow The Spread (USFS and Indiana DNR)
For Homeowners
Impact on Homeowners
Harm to Trees
How Gypsy Moths Move
Your Tree’s Health
Clean Up Your Yard
Destroy Egg Masses
Control of Caterpillars
Insecticides for Caterpillars
Control of Pupae
Control of Adults
Gypsy Moth Activity Calendar
For Professionals
Quarantine Information
History of Gypsy Moths
Asian vs. European Gypsy Moth

Gypsy Moth Management for Homeowners

Your Tree's Health

Maintain the overall health of your trees and shrubs to help them survive gypsy moth attack.

Trees that are initially healthy are more likely to survive attacks by gypsy moths with little long term damage than unhealthy ones. If possible, hire a tree care professional to assess the health of your trees and shrubs.

Ways to keep your trees healthy

Provide adequate water for your trees
(Tammy Luck, Purdue University)

Provide adequate water. This is the most important way to maintain a treeís health, especially during summer droughts. As a minimum requirement, trees should receive at least 1 inch of rainfall or irrigation per week.

Prune tree limbs when necessary. Removing dead limbs not only adds to the vigor of trees but reduces risk of injury to people and damage to property but make sure you do it properly.

Sidewalk salt is not good to use.

Prevent exposure to salt used in winter. Instead of using pure salt (sodium chloride) to melt winter ice, use sand by itself, sand mixed with a small amount of salt, calcium chloride, or calcium magnesium acetate (available at hardware stores).

Be careful with herbicides. Protect trees and shrubs from drift when spraying herbicides for weed control. Donít apply herbicides on windy days and avoid using herbicides that volatize or move easily through the soil.

Avoid mechanical injury. Wounding a tree weakens it and makes it susceptible to attack by insects or disease.

Proper mulching can help keep a tree healthy.
(Sarah Cox, Purdue University)

Donít overmulch. Mulching around the base of a tree with hardwood composted mulch to a depth of 3 to 4 inches can prevent grass and weeds from growing in that area, reducing the chance for injury from lawn mowers and weed whips. Use of more than 4 inches of mulch can be detrimental to the tree.

Avoid soil compaction and damaging root systems of trees. Compacted soil limits root penetration, prevents proper movement of air and water into soil, and is detrimental to successful establishment and growth of the tree.

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