Jemmer Zucchini This page first published: Oct 12, 2005 · Updated: May 9, 2018 · by CooksInfo. Copyright © 2021 · This web site may contain affiliate links · This web site generates income via ads · Information on this site is copyrighted. Taking whole pages for your website is theft and will be DCMA'd. See re-use information. Jemmer is an F1 hybrid zucchini with glossy, brilliant yellow skin. 75 days from planting to start of harvest. It will keep on bearing heavily throughout the season.