If you do an Internet search on "perennial vegetable", you'll find that there are quite a few others.

You neglected to mention other facts about asparagus and rhubarb. In actuallity, neither asparagus or rhubarb are vegetables of any kind. Neither are related each other and are in completely different classes of any vegetables. Vegetables grow on vines, but the pea is actually a legume and related to alfalfa and clover. Asparagus and rhubarb are classified as perenials,
and will come year after, and not just for a few growing seasons. My mother had the fiberous root of rhubarb for over 30 years, and it was through 4 transplantings too,

Not sure what RSS is? Get more information