I don't have a garden, but kinda like the idea if I ever get myself out of this condo and on to a larger property.
I landscaped privately for a guy in Frankfort, and we had some garden beds we planted/maintained for the owner.
We did those the way
@HeHateMe described.... wooden planter boxes filled with topsoil/compost.
One big one had blackberries, red raspberries, and blueberries IIRC.
I wouldn't mind being able to pick blueberries fresh for muffins or pancakes or the like.
The other bed had veggies, and I joke not, some of the biggest fucking eggplants I've ever seen.
This was before eggplant emoji became what it is today, but I recall pointing at one and saying "If you were a girl, using these for.... I mean, how would you even?"