Aerith has a garden at her home and another in the...Southwest Quarter? I think. It was established with Angeal and Urahara, and has more things like food crops, or at least is intended to. She's been spending a lot of her time there working on it. Her personal garden is more like small veggies and some basic herbs, as well as those yellow and white flowers that like to grow wherever she lives. She also has magical plant-growing magic that helps her keep things growing properly.