Vegetable Description: This vegetable is great for winter storage! American Purple Top rutabagas produce large, round, yellow roots with a purple crown. Fine flavored flesh is firm and sweet and turns orange when cooked. This easy to grow variety matures in approximately 90 days. Self sows freely and may be invasive, deadhead if you do not want volunteer seedlings. This plant requires consistently moist soil, and is attractive to bees, butterflies, and/or birds