How deep should the mulch be around my trees?

Mulch around a tree should be spread out like a donut, not piled up like a volcano. Mulch should not touch a tree’s bark, nor should it be piled higher than three to four inches. Mulch that is too deep decreases the exchange of oxygen and carbon dioxide, which can lead to fungal and bacterial diseases.

Show All Answers

1. Does the tree lawn belong to me or the city?
2. If I plant a tree in my tree lawn, whose responsibility is it?
3. When is the best time of year to plant trees?
4. How deep should the mulch be around my trees?
5. Who do I contact if there is an issue with my tree(s)?