Posted: 04/03/2016 at 11:08
I wish the GC wouldn't sell these plants so early, they do it with tomato plants as well, very disappointing for new gardeners.
I always use root trainers for my beans, one bean in each module. But those polystyrene cups are fine, I use them for lots of seeds.
2 dozen is not a lot, you'll be fine with those, you may find one or two won't germinate.