By the way the woman carefully tends these plants, I suspect they are rice plants. Now about one third to one half of the residents in our building our ethnically Asian, so you can make a natural assumption about who would be growing rice on their balcony.
And you would be wrong. She is not the least bit Asian.
I hope she is obeying body corporate rule number ??? "Balcony plants must be of good appearance and in suitable decorative containers. When watering, water must not be allowed to drip down onto another resident's balcony."