Hello. I have made a new crop and seed and have got it into zombie, and alike mob, drops as well as villagers and wondering traders trades and certain chests. I would now to make it so it could spawn in the farms of some of the villages so when i play in survival i can find it like the vanilla crops. I don't really want to replace any crops or make a new structure, which I've have seen people suggest but still for older versions either way. I just want to add it to like a list of the ones that could spawn or something like that. Thanks guys.

i would also like to make the villagers be able to pick up and plant my seed but for the life of me i cant find out how to let that happen thanks.

In ItemTags there is a tag for VILLAGER_PLANTABLE_SEEDS, I would probably start by adding my seed to that tag.

Look through the vanilla MC code, see how the regular wheat seed is used, and it should give you some pointers in the right direction.

If you need more help, share your code (github is great, and for more than just that), and be descriptive about what is working/not working, what you did to test, etc.