Abstract: A container assembly for growing and transplanting plants is disclosed. The container assembly includes an open ended pot, a drainage tray, and a drainage disc removably supported on an annular flange near the bottom end of the pot. The drainage disk is movable through the pot for displacing a volume of soil and a rooted plant through the top opening without disturbing the soil surrounding the roots of the plant. The tray sidewall and pot sidewall define an open reservoir space between the sidewall of the tray and the sidewall of the pot to permit the plant to be watered from the bottom.