The Bonnie Plants 19.3 oz. Ichiban Eggplant Plants produce loads of long, slender, dark purple eggplants with thin skins and mildly sweet flavor. An excellent variety for roasting, grilling and stir-fries; chefs love it! It's a very productive plant that grows well in containers. It grows best in warm weather, but will continue producing through to the first frost. Eggplants require full sun to grow. It takes about 50 to 60 days to mature fully.