04/15/2024
It's mulching season and time for our annual reminder about how to do it correctly. The text below explains how to do it right, i.e., no volcano mulching. If it's been done incorrectly, you'll have to do what I had to do today: crawl around under the tree and move the mulch back away from the trunk to make a little berm, leaving a convenient little space for water to collect. Good luck!
IMPORTANT INFORMATION ON MULCHING AND TREE
PLANTING
Mulch wide – not deep
The mulched area should include as much of the root zone as possible. It should extend at least 3 to 6 feet out from the base of the plant. It is imperative to pull the mulch 1 to 2 inches from the base of tree to prevent bark decay. Otherwise the tree could die if the mulch is piled up against the trunk (“volcano mulching”).
A 2- to 4-inch layer is adequate to prevent most w**d seeds from germinating. Mulch should be applied to a w**d-free soil surface.
Organic mulch is the preferred product. They include wood chips, pine needles, hardwood and softwood bark, cocoa hulls, leaves, compost mixes, and a variety of other products usually derived from plants.