60 days to maturity. Raphanus sativus. Aka (Red) Karaine Hot Radish Hybrid Seeds. Open-pollinated, non-GMO, cool season annual. Aka Red Karaine hot radishes are unique and eye-catching—which is probably why they’ve won awards! Their skin is a deep pink, softening to white at the core. Its low water content gives it an intense spicy flavor that any hot radish fan will adore. These radishes grow in a cylindrical shape to about 6 inches in length. As a bonus, the radish tops are a deep purple, which will look great in your garden! Approx. 3,200 seeds / oz.