Blackish Green Smooth, cylindrical fruit on bush-type, vigorous plants.A great improvement over the old Black Zucchini. The 3-4 foot open bushes let you see the fruit before it becomes giant-sized. Best eaten when 6-8 inches long, the fruit is cylindrical, smooth, dark green, and straight. For a treat, dip blossoms in a beer batter and deep-fry. For a treat, dip blossoms in a beer batter and deep-fry. This popular garden vegetable has a good combination of nutrients, including vitamins A, C, and K, folate, manganese, and potassium – all important for heart health. Most of these nutrients reside in the skin and the darker the zucchini, the more nutrients, especially beta-carotene and minerals. Like all summer squashes, zucchini are very low in calories and high in water content. Try some squash just lightly steamed rather than fried or in casseroles; you’ll enjoy the maximum of nutrients and retain the low calorie count.