Welcome to our store Learn more

10% OFF all Seed Combo Packs

SEEDCOMBO26

Sibley Winter Squash

$ 2.50

Care information

Check out Mary's Comprehensive Planting Guide for detailed planting info.

Storing seeds prior to use: seeds should be stored in a cool, dry place away from direct sunlight for optimal germination.

Thank you for choosing Mary's Heirloom Seeds. If you have additional questions please send us an email to mary@marysheirloomseeds.com

100-120 days. Cucurbita maxima

Known for its long storage life, Sibley produces teardrop-shaped blue-gray fruit with deep orange, dry, and sweet flesh that improves in flavor after curing.

‘Sibley' squash (aka Pike’s Peak) was introduced commercially in the 1880s, tho it may be traced into the 1830s.

Sibley Squash plants produce Vigorous 12–15' vines, which produce slate-blue fruit described by Michael Pollan as “pinched in both ends and bulging at the waist.”

Contains 10 heirloom seeds

NEW ARRIVAL for 2026

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Venmo
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Mary's Heirloom Seeds

Sibley Winter Squash

$ 2.50

100-120 days. Cucurbita maxima

Known for its long storage life, Sibley produces teardrop-shaped blue-gray fruit with deep orange, dry, and sweet flesh that improves in flavor after curing.

‘Sibley' squash (aka Pike’s Peak) was introduced commercially in the 1880s, tho it may be traced into the 1830s.

Sibley Squash plants produce Vigorous 12–15' vines, which produce slate-blue fruit described by Michael Pollan as “pinched in both ends and bulging at the waist.”

Contains 10 heirloom seeds

NEW ARRIVAL for 2026

View product