You can grow a lot of different things in a stacked pot. A good rule of thumb is that if you can plant it in the ground, it can be grown in a stacked pot. Some plants like to grow tall, some prefer shorter growth, and some grow better with an open structure. But as long as they have enough growing space, you can grow them in a stacked pot.
Stacking pots is great because it allows you to grow more than one plant at once, saving money and reducing space in your garden. It also allows you to grow more crops at once by using a vertical growing method.