https://www.seedsavers.org/ralph-thompsons-squash-organic-pepper

http://ushotstuff.com/pepper-seeds/RedSquashSeeds.htm

Thank you!! An old gentleman gave me a bunch of squash pepper seedlings in a small community in the country where I lived......they made the very best vinegar pepper sauce. I have looked for squash pepper seeds since - Thank you for your comment - plan to order today and look forward to having that wonderful vinegar pepper sauce later in the year!

Judith

A yellow variety:

Midwestchileheads.com - Squash, Jamaican Yellow

This yellow was the one I was given - I think it started out green, turned yellow then red as it aged.

Jamaican Yellow is usually called a mushroom pepper. Its ripe color is yellow does not turn red. very prolific and reasonably hot.