Radishes are resistant to several degrees of frost, so seeding may start as soon as the land is ready in the spring. Maturity is reached in 21 to 26 days or longer in cool weather.
Consecutive plantings can lengthen harvest period.
Radishes are grown successfully on peat land throughout the summer months. Only short to medium foliage varieties should be used. Sandy and sandy loam soils are frequently low in available potassium. Excess nutrient levels may occur when high rates of fertilizer are used. Producers should avoid applying fertilizer at rates in excess of those recommended by a soil test.