It says it can clone seeds to make plants grow in that area,but how do i get the seeds for it?

You have to find the seeds, they're in the nort-western part of the map, in that canyony thingy.

Just found out on the wikia,the X22 botanical garden,im a roleplayer tho,not a chance im going to use seeds that came from that place,don't want my nice little penthouse in the top of a giant dome to become Vault 22.5 . :biggrin:

the plants are supposed to grow back right? i gave it my seed very early in the dlc, and the plants have not grown back after my initial harvest. btw, salient green is a great idea, a perfect fit with the dlc.

They didn't for me at the start either, nor did the Central Intelligence restock it's store, but after I left Big Mt and returned they started going on the regular cycle.