I personnally planted ingredients which i found to be most rare, or hardest to find..
-Giant Lichen (not just hard to find, but hard to see when you do)
-Swamp Fungal Pods
-Wheat
-Grass Pod
-Jumiper Berries
-Jazboy Graqes
You can plant rare things, hard to find things, or whatever your goin to use most...Unfortunately, some of the rarest wont allow planting
Aside from those mentioned above I also always plant some hard to find ones such as Giant Lichen and Jazbay Graqes.
Nice to have a Canis root or two planted, because at least for me, they don't seem to regrow ever...