Plant guide:ðŸŒĩ Cactus
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Cold Damage and Frost Injury in Cacti

Commonly affects: Cactaceae (Cactus)

Tissue develops water-soaked, translucent patches that turn brown or black after cold exposure, and severe frost can kill the plant outright.

Potential Causes

  1. 1Exposure to temperatures below the specific species' cold tolerance, which varies significantly between cactus types
  2. 2Sudden unexpected cold snaps without protection
  3. 3Frost directly touching plant tissue

Solution Steps

  1. 1Move container-grown cacti indoors or to shelter before expected frost
  2. 2Research your specific species' cold tolerance, since some (like certain Opuntia) handle much more cold than typical desert cacti
  3. 3Cut away severely damaged tissue once the danger has passed
  4. 4Provide frost cloth protection for outdoor plantings in marginal climates

Prevention Tip

Cold tolerance varies enormously between cactus species — know your specific plant's limits rather than assuming all cacti handle the same temperature range.

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