A modular planter assembly formed of a base planter housing having a cavity volume for dirt or growing material defined by a surrounding vertically disposed sidewall. Smaller elevated planters are supportable above the base planter on support members extending between a pair of vertically disposed elongated members which engage passages formed in the sidewall of the base planter. The elongated members may be one piece, or formed of a plurality of component members to allow the user to lengthen them and add multiple elevated planters to the formed device.