On this link you'll find lots of information on almost every aspect of keeping birds - from coop building ideas, to incubating eggs - https://www.backyardchickens.com/articles/
Not sure what you mean by plants in a chicken run, there's nothing that I know of that would survive. Chickens normally get their greens from free ranging or access to a compost pile with limited grass clippings or fruit/veggie peelings. You can hang a cabbage or other fresh greens in the run for them to peck at and keep them busy if they're not allowed to free range. I prefer deep litter in the coop/run and it also makes excellent compost if you have a garden... only need to scoop it out once a year.