Is Preen Safe Around Newly Planted Tree?

As a gardener, it's important to use the right products to protect and nourish your plants. One common product used in gardening is Preen, a pre-emergent weed killer that prevents weed growth for up to six months. But is it safe to use around newly planted trees?

The Risks of Preen Near Newly Planted Trees

While Preen is effective in controlling weeds, there are some risks involved when using it near newly planted trees. One of the main concerns is that Preen contains a chemical called trifluralin, which can be toxic to plants and animals if not used properly.

If Preen is applied too close to a young tree, the chemical can seep into the soil and damage the roots, stunting the tree's growth or even killing it. Additionally, if Preen is overused or applied too frequently, it can build up in the soil and harm beneficial organisms, such as earthworms, that help keep the soil healthy for trees and other plants.

Safe Guidelines for Using Preen Near Newly Planted Trees

While there are risks associated with using Preen near newly planted trees, there are ways to use the product safely without causing harm. Here are some guidelines for using Preen near trees:

Wait at least six months after planting a tree before applying Preen near it to allow the tree to establish its roots.

Read the label on the Preen container carefully and follow the instructions for use.

Avoid applying Preen within the drip line of the tree, which is the area directly under the branches where water drips off the leaves.

Apply Preen in thin layers rather than thick clumps to prevent runoff and excess buildup in the soil.

If using Preen around multiple trees, apply it to the areas farthest away from the trees first to minimize any potential risks.

Water the area thoroughly after applying Preen to help disperse the chemical and prevent it from clinging to the surface of the soil where roots can absorb it.

By following these guidelines, you can use Preen safely without risking harm to your newly planted trees.

Alternatives to Preen

If you're still concerned about using Preen near your newly planted trees, there are alternative methods you can use to control weeds. One option is to use a mulch like wood chips, leaves, or grass clippings around the trees. Mulch can help suppress weed growth and also provides additional nutrients to the soil as it decomposes.

Another option is to manually pull weeds by hand or with a garden tool. While this method can be time-consuming, it's a safe and effective way to control weed growth without risking harm to your trees.

Conclusion

While there are some risks involved with using Preen near newly planted trees, it can be a useful tool for controlling weeds when used properly. By following the guidelines outlined in this article and considering alternative methods, you can keep your trees healthy and weed-free.