60 Days to maturity. Raphanus sativus. Relish Cross Radish Hybrid Seeds. Cool Season Annual. Relish Cross radishes are the best-selling variety in Japan due to their consistent quality, large size, and late bolting! This variety grows to approximately 15 inches long and 2 pounds in weight with white flesh and light green shoulders. They also have smooth skin and a great texture! Plant in spring or early fall when temperatures reach 60°F. Relish Cross radishes are resistant to warmer temperatures and have very late pithiness, making them a forgiving variety for those in warmer climates. ~ 2,600 seeds / oz.