If you want to grow it indoors, I recommend applying the Sea Of Green production optimization technique. The compact shape of its structure invites to grow many plants per square meter, about 16, leaving only the main tip of each one and pruning low.Outdoors, it will be necessary to germinate in early spring if we want Bubble Gum seeds to become trees. Like other indicas, this genetics needs its time to develop fully. When grown outdoors or in greenhouses it is advisable to make apical pruning, and pruning of secondary branches. In this case is better for several reasons, first because the light penetrates much better, but also because it forms a central bud of considerable size, something that can be dangerous if wet.