Overmulching

July 30, 2015

Applying too much mulch around trees can restrict oxygen in the soil just like planting too deep. In heavy clay soils, thick layers of mulch may result in waterlogged soils. Mulch piled against the trunk may cause it to decay, allowing plant pathogens to enter and produce cankers. Mulch depths of 3” to 4” are adequate. Avoid piling mulch directly around the trunk. Taper the mulch depth around the trunk to about an inch or so.

overmulching

Print a PDF of this page: Abiotic injury – overmulching

Back to IPM scouting in woody landscape plants.

Tags: integrated pest management

You Might Also Be Interested In

Accessibility Questions:

For questions about accessibility and/or if you need additional accommodations for a specific document, please send an email to ANR Communications & Marketing at anrcommunications@anr.msu.edu.