"Pot-in-pot" describes a nursery production system that uses containers (production pots) placed inside permanent in-ground containers (socket pots). Pot-in-pot is used for the production of caliper-sized shade trees, flowering trees, and large shrubs. The pot-in-pot system combines many of the benefits of field production with the marketing flexibility of container production. Container-grown plants can be sold at any time of year and with relatively short notice, whereas harvesting of field-grown plants requires more planning and is typically not done during the summer or extremely wet periods.