Designer Mulch Additional Information
Organic materials do not need to be composted before using if they are applied as a surface mulch. Additional nitrogen is not needed unless "green" or non-composted organic material is incorporated into the soil.
Mulch should be placed as a uniform depth, and care should be taken so that none is against a tree trunk. Putting mulch against the tree trunk may cause disease problems in the living bark at the base of the tree, especially with young trees. A mulch-free area, one to two inches wide at the base of the tree, is sufficient to avoid moist bark conditions and prevent infection.
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