Answer: You can place an organic mulch beneath your trees and shrubs to help moderate the soil temperatures and keep the plants from heaving out of the soil during the normal freeze and thaw cycle during the winter months. Straw is fine. So are shredded leaves or compost. Just be sure to keep the mulch material away from the main stems or trunks - placing the material against the wood can cause rot if the material gets wet and holds the moisture against the stems or trunks. Best wishes with your landscape!
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