I have a lot of pots that have some beautiful zinnias and I want to collect the seeds. So later this month when the zinnias start to look poorly I will move the pots to the back of house. My question that came to mind was will I need to water the pots while I wait for the flowers to go to seed. Or do I just move to the backyard and forget about the pots and collect the seeds when they are ready. Thanks so much.