Click or scroll to zoom Tap or pinch to zoom Gro Pro Black Square Pot 2 Gallon by Gro Pro Sale $2.49 SKU 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Buy Now The new square shape with the textured exterior and patterned design at the top stands out from the rest of the pots. Made from copolymeric polypropylene that is stabilized to handle the UV rays. Works great with the Gro Pro® Square Saucers.