58 Days to maturity. Raphanus sativus. White Cannon Radish Hybrid Seeds. Cool/Warm Season Annual. While it may not seem as exciting as some other varieties, this hybrid daikon radish focuses on the basics: great flavor, excellent weather tolerance, and lovely color. White Cannon radishes are great for subtropical climates and are incredibly tolerant to both cold and hot weather. Their bright white skin and pale green necks make them easy on the eyes, too. If you want a no-nonsense delicious daikon radish for your garden this year, White Cannon is the way to go! ~ 1,300 seeds / oz.