I just read this fascinating article on kernza, an alternative to wheat that is a perennial, rather than annual, crop. From the article, "Can This Breakfast Cereal Help Save The Planet?", this is important because:
These plants don't require reseeding. Their roots go deep into the earth, live right through the winter, and send up fresh green stems every spring.
This, in turn, reduces the need for tilling, pesticide, and fertilizers (whether organic or not), and also helps reduce erosion, runoff, and habitat destruction.
I tried to find other examples of perennial crops, but the Wikipedia article just lists a few generic examples. I know that most types of fruit and nuts are from trees and thus perennial, but what others are there?
In an effort to vote with my dollars at the grocery store, what are examples of perennial crops that are commonly available in stores?