Sibley Squash is oblong, plumper at the base with a narrower neck, and with brownish-slate coloured hard rind.
Inside, it has thick, orange flesh, with sweet, good flavour.
It grows to be 10 to 12 inches (25 to 30 cm) and weighs 8 3/4 to 11 pounds (4 to 5 kg.)
The plant’s vines grow 12 to 15 feet (3 1/2 to 4 1/2 metres) long.
110 to 120 days from seed.
Ships and stores well. Flavour improves in storage.
Sibley Squash was introduced in 1887 by the Hiram Sibley Company of Rochester, New York State. They obtained the seed from a woman in Van Dinam, Iowa, who had grown it in Missouri for at least 50 years prior to that.