One seed per plug,from tray to ground,maters at 1-1 1/2 ft will pop right out.A companion water/fert retention tray does all the watering.No more solo cups/cow pots etc.All the farmers and greenhouses use them here in Homestead Fl.They are reusable,clean and stack easy during off season.
http://www.amazon.com/Deep-Nursery-T.../dp/B00M9ADO66