Every gardener needs this kind of workhorse in the garden, and for many, the obvious choice to fill this niche is beardtongue (Penstemon spp.). It comes in many varieties, meaning there is one for ...

White-margined penstemon (Penstemon albomarginatus). Photo credit: Patrick Donnelly. Images are available for media use. The Center for Biological Diversity is a national, nonprofit conservation ...