Causes of ALS. ALS is a somewhat diverse and decidedly mystifying disease. In more than nine out of every 10 cases diagnosed, no clear identifying cause of the disease is apparent, that is, patients lack an obvious genetic history, complete with affected family members.
1 Gold Rush - A unique zucchini variety that features gold colored fruit and a classic zucchini taste, compact plant. 2  Black Beauty - this variety bears very dark green fruit, very compact plants.  Embassy - features medium green fruit, almost spineless plant, very heavy producer.
Look for a uniform green color encompassing the entire zucchini. Look for zucchini that are 6 to 8 inches in length. Select zucchini that is fairly firm and not too soft. It should feel slightly more flexible than a cucumber, but not by much. Avoid soft zucchinis because the softness is a sign they will be inedible very soon.