Mulch in hands

Mulching Around Trees

Why should you place mulch around your trees?

  • Helps reduce soil moisture lost through evaporation 

  • Reduces the potential harm from weed whackers and/or lawn mowers

  • Can improve soil structure as mulch decomposes over time

  • Helps control weed germination and growth 

  • Reduces soil compaction

  • Enhance biodiversity and beneficial organisms

  • Insulates soil, protecting roots from extreme summer and winter temperatures

  • Gives planting beds a uniform, well-cared-for look 

mulch around tree

Best mulching practices! 

By placing mulch around the root zone of a tree you reap the benefits of healthier plants and soils. As beneficial as mulch is, too much can be harmful. On wet soils, deep mulch can lead to excess moisture in the root zone, which can stress the plant and cause root rot, just to name one danger. The generally recommended mulching depth is 2 to 4 inches. 

First, determine whether the soil drainage is adequate. For well-drained sites, apply a 2 to 4-inch layer of mulch (less if poorly drained). Coarse mulches can be applied slightly deeper without harm. Place mulch out to the edge of a tree’s crown or beyond. If mulch is piled against the tree trunk, pull it back a bit so that the base of the trunk is exposed.