Rhubarb is a venerable garden crop in West Virginia, but it is becoming a forgotten vegetable. Rhubarb is a perennial vegetable that can produce for more than 10 years. The rhubarb plant has very large leaves with thick leaf stalks. The leaf stalks can be red or green and are typically harvested when they reach a length of 12 to 18 inches in mid- to late spring in West Virginia. While red stalks are slightly sweeter, green stalk varieties yield more.