Perennial cell sizes range from a large vernalized 21 or 32 cell count tray to a small, non-vernalized 288 count plug tray.  Domestic and imported bareroot stock minimums range from as low as 10 per variety to full case pack.  These minimums vary per supplier and season.  Bareroot product, planted in one gallon containers may be ready for sale in an average growing time of 60 days.