How to Use a Pre-Emergent With Apple Trees

Weeds growing over the roots of apple trees rob the trees of water and vital nutrients. Weeds are often removed at planting time, but their seeds may remain in the soil. One way to keep weeds from coming back is with a pre-emergent herbicide. Pre-emergent herbicides, because they are specifically formulated to target plant seeds before they germinate, will not kill apple trees. However, large amounts of over-spray may burn, damage or even stunt the growth of young saplings and new transplants, so they should be protected.

• 1

  Rake up any leaves and other plant debris from the area underneath the apple tree. The debris may prevent the pre-emergent herbicide from reaching the soil and preventing the weed seed from germinating.

• 2

  Water the apple tree. You should never apply herbicide near a plant suffering from drought stress. As you water, also spray the base of the apple tree and any low-growing foliage with water to the point of runoff to create a protective layer of moisture.

• 3

  Apply the pre-emergent herbicide (granular or spray) to the soil according to the manufacturer's instructions.

• 4

  Rinse off any pre-emergent herbicide that makes contact with the apple tree's trunk or foliage.