Weed Suppression and Disease Protection: Many seeds need light to germinate. Adding mulch can smother out weed seeds before they start, making yard maintenance that much easier. Mulch is also great at reducing splashback of soil when you water. Plants like tomatoes are susceptible to soil-borne diseases, often spread when soil splashing onto their leaves. Add a layer of mulch to your veggie garden to protect your plants from disease and reduce issues like bloom-end rot, which can be caused by inconsistent watering.
Mulch It Right:
There is such a thing as too much of a good thing. We do not recommend mulching deeper than 3 to 4” deep. That measurement includes any existing mulching. Deeper mulching prevents water from penetrating down to the roots of the plants and gives critters the opportunity to burrow in your beds.
A common error that we see in mulching around trees is the dreaded volcano mulch. Pushing decaying material up against the trunk of a tree is dangerous for the tree. The trapped moisture can rupture the bark, allowing insects and disease into the tree. Instead, mulch should stay away from the trunk of the tree and cover the roots out to the drip line. Picture your mulching more like a donut. The tree is in the donut’s hole with a few inches between the bark and the mulch.
Our Favorite Mulch: