Add Yahoo as a preferred source to see more of our stories on Google. A close-up of lima bean pods growing up a trellis - A S M Almas/Shutterstock For many plants, alliums (of the herb or flower ...

This story is from The Pulse, a weekly health and science podcast. Find it on Apple Podcasts, Spotify, or wherever you get your podcasts. On a misty, spring day in May, about a dozen volunteers ...