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BudgetGrower
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Often I top my/fim my plants to control the height in veg, you should always limit the number of main shoots depending on the size of the plant and thin out the rest, get rid of the stretched side shoots in late veg/ early flower as they reduce airflow(increasing chances of bugs and mold), reduce light in the canopy(lower bud sites) and use up plant food. 2- 4 main shoots per 1ft2 work best for me.
Plants stretching in flower can be controlled by the number of main shoots, just before you flip,
for example, a 2ft wide plant with 16 tops is not going to stretch another 18" but a plant that has not been topped, may stretch another 30"
Plants stretching in flower can be controlled by the number of main shoots, just before you flip,
for example, a 2ft wide plant with 16 tops is not going to stretch another 18" but a plant that has not been topped, may stretch another 30"