I don't have enough land to own a farm or any large scale cultivation project. My original idea was to grow bonsai trees, but a 4 year old tree goes for $20. I don't see how anyone in the world can make any sustainable income off of that.

I can grow anything from cacti to flowers to a full blown tree (don't have enough space for a tree).

Any ideas on how I can turn my gardening ability into a business?