When the structural roots of trees are planted too deep or are covered with too much soil the lack of oxygen can kill the roots and lead to the decline or death of the tree. Also in some species of trees the prolonged moisture at the base of the trunk can increase root and collar rot diseases. The following is some basic guidelines when planting and placing soil around trees.

1. As a general rule the uppermost roots should be within the 1 to 3 inches of the soil surface, measured 3 to 4 inches from the trunk, but sometimes there may be exceptions.

2. Plant trees at the proper depth by having the root flare exposed or visible.

3. Trees planted with too much soil over the structural roots may require replanting.

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