How to Kill Ants Attacking an Oak Tree

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Things You'll Need

  • Insecticide

  • Petroleum jelly

  • Boiling water

  • Peppermint oil

Ants can take over an oak tree in a short amount of time.

Most everyone enjoys oak trees, yet not all admirers are good for the stately trees, including ants. For this reason, it is essential to eliminate ants from attacking your oak tree. While ants can eat other harmful insects on the oak tree, they can quickly expand in population and take over a tree, eating its leaves and other vegetation, as well. Fortunately for both you and the oak tree, there are ways to destroy the ants without harming your tree.

Step 1

Determine what type of ant is attacking your oak tree. In order to pick the appropriate insecticide, you must know what type of ant you are dealing with.

Step 2

Inspect the tree to look for colonies. Look around the base of the tree, as well as in the bark. If you have mulch or dirt around your tree, rake it back to look underneath for the colonies. You must eliminate the colony in order to completely remove the ant problem.

Step 3

Spray the tree with insecticide that is effective against the type of ant that is attacking your oak tree. If possible, spray the ant's colony, as well.

Step 4

Place ant bait around the base of the tree to eliminate ants. This method also works well when you cannot locate the colony, as most ants that are a part of the colony will walk by and eat the bait.

Step 5

Apply a thick coating of petroleum jelly around the base of the tree. The ants will avoid walking through the substance, which eliminates their contact with the tree.

Step 6

Spray or pour boiling water on the ants and the colony. You might need to administer this method a few times before the ants are completely eliminated.

Step 7

Add 30 drops of essential peppermint oil to 1 gallon of water and pour the mixture along the base of the tree. Ants detest peppermint and will avoid coming into contact with the fragrant substance.


Heather Vecchioni

Heather Vecchioni is a freelance writer in Maryland. Her work has appeared in several animal-interest magazines, as well as Baltimore-area newspapers and publications. She has a Bachelor of Arts in English from the University of Maryland. She has worked in the veterinary field for over 10 years and has been writing and editing professionally for over five.