Penstemon Blackbird 08-01-2019DianeComments are closed Like most penstemons, Blackbird is an excellent garden plant. It is easy to grow, attractive for most of the year and flowers generously. Native bees and birds love it. Perennial with dark maroon flowers Category: Penstemon Related products Penstemon Pink Cloud Penstemon Alice Hindley Penstemon Snowstorm Penstemon Midnight