Bee optimization is a very important aspect of balcony gardening. The bees need to be attracted in some way!
Therefore, over the years we have been trying to plant a large variety of different flowering plants on the balcony. The more colourful, the more likely bees will be attracted, apparently!
We had flowers hanging from baskets (e.g. Geraniums and Petnuias) and also just from pots by our balcony railings. Then we also intermingled our vegetable plants with flowering plants. Indeed, increasingly we have had more pollinators visiting our balcony and I have had less hang pollination to do, to make sure we get sufficient vegetable crops on our balcony 🙂