Buying guide

Winter Care Kit

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Outdoor bonsai need cold to rest, but the pot is the weak point because roots freeze far faster above ground than they would in the earth. Plan for shelter, mulch or a cold frame, anchors so winter wind does not tip a tree off the bench, a dormant season pest treatment, and trays for the thaw when meltwater has to go somewhere. Shelter and insulation. Species built for the cold. The classic hardy conifer. Dormant season treatments. Securing trees against wind. Catching meltwater.