A gardener asked if pressure-treated wood repels vines. The expert had never heard of such an effect and reported vines growing fine on a new pressure-treated trellis. Modern treatments (ACQ, copper azole) are less toxic than old CCA and don't inhibit plant growth. Vines attach via tendrils, twining stems, or adhesive pads—none are deterred by the preservative.
Ensure the wood is dry before planting. Use galvanized or stainless steel hardware to prevent corrosion from the copper in the treatment.
Safe Pairings:
No need to avoid pressure-treated structures for vine support.
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