I need some advice on container sizes. I've got Sungella tomatoes sprouting, about 12 seedlings (didn't think I'd get 100% germination, but that's what happened). I can have one container... what size would work for one or two of these seedlings? The rest will have to find new homes : (

I've also got about 3 moonflower vines starting. What size container will work for these?

Also, does anyone see any problems with growing a dahlia in a pot that grew grape tomatoes last year? I'll be adding some fresh soil and mixing it in, but I was just wondering if there was some issue I wasn't aware of. The pot looks to be about 20in in diameter, and maybe about as high, but tapers at the bottom.

I just wanted to get some advice before I went shopping for containers... don't have a car and it's kind of a pain to arrange for a ride. Thanks!