Follow-Up: Replanting a Cactus After Rot Surgery

Post-Surgery Care for a Cactus with Through-and-Through Rot

The owner successfully removed a rotted section from a large cactus, leaving a 10–12 foot segment with no top or bottom. Roots were healthy. After fungicide treatment and air-drying, they ask when to replant.

Replanting Guidelines

• Wait for callous. At least 2 weeks; longer for thick stems.
• Pot in slightly moist soilless mix. Plant deep enough to stand upright; stake securely.
• No water until new growth appears. This can take months. Occasional misting is okay.
• Keep out of direct sun. Bright indirect light until established.

Outcome

The healed wound is sufficient for replanting; no need to wait for visible roots. Patience and minimal watering are critical.