Red McClure Potatoes This page first published: Apr 16, 2005 · Modified: Jun 1, 2018 · by CooksInfo. Copyright © 2020 Red McClure are oblong potatoes with red skin. They are marketed as all-purpose for direct to consumer sales. Late harvest. History Notes Red McClure Potatoes were developed from a sport of a potato called “Improved Peachblow.” Released 1910.