Summer wildflowers are in bloom throughout the region. The most common colors to be found by country roadsides these days are blue, yellow, red and white. The blue comes from common chicory, which is used around the world in coffee and is sometimes added to beer in the brewing process. Yellow is found in prickly lettuce, which is a close relative to cultivated lettuce. Red is associated with red clover, a plant known for improving soil nitrogen. The white is Queen Anne's Lace, or wild carrot, which is native to Asia and Europe. A roadside garden