Organic Carrot Rainbow Blend (600mg.)- Matures in 75 days. A favorite main crop Carrot with roots 6 to 7 inches long in many colors until the Dutch bred the orange color in the 17th century. This blend of red, yellow, purple, white make beautiful snacks and adds color to salads. Some shades lose some color when cooked. TIP - some gardeners like to soak the seed for a few hours before planting to aid in germination. Tty planting radish seeds in the row with carrots. The radishes will sprout quickly to mark the row and can be harvested before the carrots get too large.