Grandprize is a straight-necked yellow pumpkin that produces high quality fruit with a bright, intense yellow color and a green peduncle. It has a broad set of resistances and a vigorous plant that offers high yields compared to other pumpkin varieties of this type.

The plant is erect, semi-open, with few thorns. It has excellent vigor and architecture, along with a broad resistance package. The fruits have a bright yellow color and a tough textured skin. Its tougher external texture protects the pumpkin from mechanical damage during harvesting, packing and transport.

Thanks to its excellent vigor and architecture, with little presence of thorns, the plant facilitates a more efficient harvest.