How Many Times to Top Cannabis Plants | Pop's Cannabis

Top cannabis plants once or twice during a normal grow. One top turns a single growing tip into two colas, a second top turns those into four, and most home growers stop there. A third or fourth round only pays off with a long vegetative stage, a ScrOG screen, or a strain that stretches hard.

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What does topping actually do?

Topping means cutting the growing tip just above a node, which removes apical dominance. The plant responds by pushing two new shoots from the node below the cut. Each cut roughly doubles the number of top bud sites while keeping the canopy even and low.

cannabis topping after flowering

How many times should you top? By grow style

• Once: short veg cycles of 3 to 4 weeks, and most autoflowers, if topped at all.
• Twice: the sweet spot for photoperiod plants vegged 5 to 8 weeks.
• Three or four times: ScrOG, mainlining, or long veg of 10 weeks or more.
• More than four: slower growth, longer recovery, and no real gain in bud sites.

Wait until the plant has 4 to 6 nodes before the first cut. Give it 5 to 10 days to recover before topping again, and only top a plant that is growing fast and healthy.

topping vs fimming cannabis which is better

Does topping more often mean more yield?

No. Yield tracks the number of healthy, well-lit colas, not the number of cuts. Past two or three tops the plant spends energy rebuilding instead of flowering, and recovery time stacks up. A plant topped twice and vegged 6 weeks usually beats a plant topped 5 times and vegged 3 weeks.

When should you stop topping?

Stop at least one week before switching to 12/12, and two weeks is safer. Topping in early flower stalls bud development and creates uneven tops. Autoflowers should not be topped after about day 21 from sprout, since they flower on a fixed clock.

Simple topping timeline

1. Let the plant reach 4 to 6 nodes, usually 3 to 4 weeks from sprout.
2. Cut above the node, leaving a small stub, and keep the plant in good light.
3. Wait 5 to 10 days, then top the two new shoots for a four-cola plant.
4. Stop all topping 1 to 2 weeks before flowering, then switch to low stress training.

Pair topping with defoliation and light bending to fill the canopy without adding recovery days. If a topped plant stalls, back off the nutrients, check root zone temperature, and let it catch up before cutting again.