Does anyone here live in apartments or any buildings with no patios or spaces for gardens? I live in a small space myself, but my sister's home is really tiny. Her super, however, allowed her to make use of the rooftop for some plants, so this weekend, we plan to set it up.

Any tips?

Use containers big enough to accommodate the plant as it grows and choose plants that are easy to care for. Choose hardy plants that can withstand the temperature extremes.