A long, slow soak under the tree’s dripline, the ground where branches extend over, is best, so soil is saturated at least 10 to 12 inches deep. Water newly established trees weekly and established trees every two to three weeks. When watering, prioritize newly planted or high-value trees. Evergreen needles may turn yellow, then red or brown. Leaves may “scorch,” or turn brown at the margins, fall off early or exhibit early fall color. However, dry weather also can weaken healthy trees and make them more vulnerable to disease, insect damage or winter breakage.ĭeciduous trees – those that lose their leaves in fall – show drought stress through curling or drooping leaves. New trees, especially, are still setting their roots and need water, Sayers said. “Make sure any trees planted in the past year are getting at least 10 to 20 gallons of water a week until regular precipitation returns. “Abnormally hot and dry conditions mean your newly planted trees are probably thirsty,” said Kevin Sayers, Urban and Community Forestry Program manager with the Michigan Department of Natural Resources. A little water will keep those trees healthy and happy as Michigan’s dry spring progresses into summer. If you planted new trees this spring or last fall, bring out the garden hose.

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