George Washington loved to experiment with crops and plant production. In his Greenhouse, he and his gardeners tested their horticultural skills by growing plants exotic to Virginia. The Greenhouse provided a winter refuge for tropical and semi-tropical plants such as coffee, orange, lemon, lime, sago palm, and aloe. During the warm growing season, these plants were kept in tubs outside in the garden.

Flanking the central Greenhouse were two long, low buildings containing several living quarters. A slave who tended the fire to keep the Greenhouse warm lived in the Stove Room. An enslaved cobbler, who made shoes and repaired leather goods, stayed in the Shoemaker's shop. Other slaves who worked in or near the Mansion lived communally in the Slave Quarters.

Before building his greenhouse, Washington studied several designs, finally adapting a plan from a similar structure in Baltimore, Maryland. Thirty-six years after Washington's death while Washington heirs were living at Mount Vernon, the original Greenhouse burned down. This was in 1835. The Mount Vernon Ladies Association had the current  structure rebuilt on the original site in 1951.

Interior of the Greenhouse