Relocating a potted cactus collection—including a 50-year-old barrel cactus—from Southern California to Tehachapi (Zone 8, with occasional snow) requires careful transition. The key is keeping plants above freezing. If winter temperatures dip below freezing, provide protection: move pots to a sheltered area, a cold frame, or an unheated garage with some light.
Let cacti go dormant in winter by withholding water entirely from late fall through early spring. A light dusting of snow that melts quickly is unlikely to harm them, but prolonged freezing or wet cold can cause rot. The barrel cactus, being mature and established, should tolerate the move with extra winter protection.
For region-specific guidance, consult the California Cactus and Succulent Society. They can advise on microclimate considerations and any additional precautions for your prized specimens.
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