They are very flavorful and are eaten as immature pods like snap beans.
They are loaded with protein, fiber, iron, calcium, and potassium.
Long beans grow on vines so you will need to provide support such as latticework, fencing, or teepees. When you stake them, train the vines to climb your support system. Clip off the tops of the vines when they reach the top and this will initiate branching.
Long beans should be harvested 65-80 days after planting, when the pods are immature and are about 15-18 inches long. At maturity they can grow up to 3 feet long; at this point they are past the best cooking stage. Although, the mature beans can be shelled and cooked like peas. When cooked as snap beans the pods will turn green.
They will produce for several weeks. For a continuous harvest plant seeds every 2-3 weeks until mid-summer.
Chinese long beans are an ancient vegetable. The wild plants still grow in tropical Africa, probably where the long bean originated, although some feel they were brought there from Southeast Asia.