Rooting a Large Cactus Cutting: The "Cowboy Cactus" Method

For a 2.5m columnar cactus with 1.1m side shoots, cutting and rooting the top is viable—but patience is essential.

Step-by-Step

1. Cut cleanly with a sterilized saw/knife.
2. Callus the cut end: 1–several weeks (larger cut = longer). Keep dry, shaded, upright.
3. Plant shallowly: In moist cactus mix, just deep enough to stand. Don't bury deep.
4. Wait 5–7 days before first water.
5. Rooting sign: New growth appears (weeks to months).

Key Tips

• Don't rush callusing—rot risk is high.
• Use a heavy pot or stake to prevent toppling.
• Warmth and bright light speed rooting.

The original base may also resprout. You could end up with two plants.