Answer: Unfortunately, most of the florist hydrangeas are not winter hardy in colder areas such as PA. If you'd like to try, however, select a location in morning sun or dappled light all day with a rich, humusy, evenly moist yet well drained soil. When the nights are reliably in the upper forties or warmer, acclimate it to the outdoors by setting it in a sheltered location over about a week and then plant it. Keep it evenly moist but not sopping wet and hope for the best.
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