W hat is a penstemon? Penstemons are great bedding plants for use as annuals, half-hardy or perennials. There are many types available. There are two main groups: American and European penstemon. In ...

Penstemons have been valued for centuries, but it's only in recent decades that they've become more widely planted in Iowa gardens. Their common name is beardtongues because of the often-hairy stamen ...