Balcony growing works with autos that stay under 60 cm, and there are a fair number of indica dominant lines bred specifically for that. Wind is the bigger issue up there, so a low bushy plant in a heavy pot beats a tall one that snaps in the first storm. Strain listings on https://turboautoflowerseeds.com can be sorted by maximum height, which is how I picked the two dwarf lines I run every summer. Neighbours smelling it in week seven is the part nobody solves.