Where to find plants for their own planting? (Fallout 4)

In the initial location, run, there, behind some houses, watermelons grow (2 pieces). Run through the wasteland, find more vegetables

Raiders have a lot of potatoes, pumpkins and more. It's just that they should not be eaten, but planted in the ground)))

the merchant with the brahmin has more seeds

and who and how to get to take care of the "culture" (mutafruits, etc.?), otherwise he planted and food is required for the settlement

CR0MWeLL
You enter the building mode, approach any free brow, press E, the inscription - Assign will appear, you run to the planted vegetable, aim at it and press E once. After a couple of seconds, an inscription will appear - Assigned. After that, the food is replenished.

Everything is just next to the houses you will find 2 watermelons - plant them - waste 1-2 days of time, harvest and plant again, and so on

go through the task, at the beginning they will give a task to save the settlers, there they also have some kind of vegetable or fruit growing