Everybody knows about aboveground buds like these on a wild plum. But most prairie plants grow from buds that are located below the ground. (This is one of the reasons grasses and wildflowers respond more quickly than trees and shrubs after a prairie fire.) Read more about the importance of these belowground buds (and see lots of photos) at: http://prairieecologist.com/2011/04/18/buds-in-the-spring/