Red Pearl Potatoes This page first published: Apr 17, 2005 · Updated: May 12, 2018 · by CooksInfo. Copyright © 2021 · This post may contain affiliate links · This blog generates income via ads · Red Pearl are small potatoes up to 2 inches (5 cm) long, weighing 1 to 2 oz (30 to 60 g) each. They have red skin and white flesh. These are waxy potatoes. Each plant will produce about 20 of the potatoes in an early harvest.