Saving a Broken, Rotting Cactus: Step-by-Step

Assessment

A 10-year-old cactus fell during a move. Root system deteriorated; a chopstick punctured the base. After a week, it's leaning, splitting, with gooey substance at the break – classic basal rot.

Salvage Procedure

1. Cut above rot: Using a clean, sharp knife, cut 2–3 inches above the highest sign of rot (discoloration, softness).
2. Inspect cross-section: Ensure no brown/black streaks in the vascular tissue. If present, cut higher.
3. Sterilize: Wipe blade with isopropyl alcohol between cuts.
4. Callus: Place cutting in bright shade, upright, for 2–3 weeks until cut surface is hard and dry.
5. Replant: Pot in dry cactus mix, burying 3–4 inches deep. Do not water.
6. First water: After 2 weeks, water lightly. Then only when soil is completely dry.

Expectations

• Rooting takes 4–8 weeks; patience is key.
• Keep warm (70°F+), bright indirect light.
• Discard the rotted base – it won't recover.

This method works for most columnar and globular cacti. The gooey substance confirms bacterial/fungal rot; removing all affected tissue is critical.