(59-65 days.) One of the 5 Best New Introductions in the 1997 National Gardening trials, Red Ursa kale combines the broadleaf frills of Siberian with the rich color of Red Russian. Great raw flavor for salads, especially the young leaves of fully grown plants. The bolting purple stems of overwintered plants are very sweet and colorful – perfect for steaming or stir-fries. The plants are surprisingly cold hardy. Many people feel that the flavor of kale improves after frost, so plant some more Red Ursa kale in mid-summer for harvesting in the fall and early winter.