Local wild weed usually can grow itself and DO make really beautiful and resistant plants and flowers, being extremely grateful beings. They are most of times overlooked and rooted out, but as a (former) gardener, I encourage the people to grow “bad weed” or however is it said in English.

Gourds and Cabbages grow a lot and are almost indestructible, while also sweet potatoes grow almost by just spitting them from time to time. You can also make potatoes and tomatoes to make a plant that grows both at the same time by joining them together, I can’t remember how is it called, in Spanish it’s called “Empaltar” or “Injerto” (Injertion?). You know when farmers frab a lemontree branch and stick it in an orangetree so oranges grow stronger, or that the same tree gives both lemons and oranges? That thing.

Succulents as said before are a nice idea, they can also grow extremely beautiful flowers, and even be useful, like Aloe Vera, which is a Succulent, and if you ever need hidratation or treat some irritation or burn, you just need to rub an small chunk and wet the area with it.

Cherry trees and other japonica like almonds, peaches, plums, are also very grateful and slow to grow, giving both beautiful flowers at the end of winter/spring and delicious food in spring/summer.

You could also cultivate mushrooms by using humid logs, which are also overlooked in most places too.

I don’t know what else to say on the fly, lol. Pretty beautiful people here giving tips already.