Short answer
Yes. Cuttings from a flowering cannabis plant can root and re-veg (monster cropping), but rooting often takes 2–4 weeks and the regrowth is odd and slow for another 2–6 weeks. Best results come from the first 2–3 weeks of flower. Grower practice.
Why
Photoperiod cannabis flowers in response to long nights and stays vegetative under long days [1]. Put a flowering cutting on 18–24 hours of light and it gradually switches back.
The switch takes time. The cutting first finishes the flowers it started, then throws rounded, smooth-edged or single-bladed leaves before normal leaves return.
Cuttings carry over the state of the shoot they came from, a known effect in propagation [2]. A shoot committed to flowering roots more slowly than a vegetative one.
Leaves still matter. In vegetative cannabis cuttings, three full, uncut leaves gave better root quality than two [3]. Flowering branches often carry fewer, smaller leaves, so keep every one you can.
The numbers
| Item | Vegetative cutting | Flowering cutting |
|---|---|---|
| Time to roots | 7–14 days | Often 2–4 weeks |
| Re-veg time | None | 2–6 weeks of odd growth |
| Best source | Mid-to-late veg | Weeks 1–3 of flower, lower branches |
| Light | 50–150 µmol/m²/s, 18–24 h | Same, 18–24 h |
| Success | High | Variable by cultivar |
What to do
- Choose lower, leafy branches with the least bud.
- Take extra cuttings: expect losses.
- Pick off flowers and pistil clusters; keep every leaf you can.
- Use rooting hormone, a dome at 75–90% RH and 18–24 h of light.
- Once rooted, keep on long days and feed lightly until normal leaves return.
Common mistakes
- Waiting until week 7 of flower to try.
- Stripping the few leaves the cutting has.
- Putting re-vegging cuttings back on 12/12 too soon.
- Relying on this instead of cloning before the flip.
Related
- Full article: Clone-only cuts and how to preserve them
- How do I reveg a plant? · Single-finger leaves
- Terms: monster cropping · re-veg
