<https://www.backyardgardener.com/plantname/penstemon-heterophyllus-blue-of-zurich-penstemon/>
<http://schema.org/datePublished>
"2016-09-21T08:33:12+00:00"^^<http://schema.org/Date>
<https://www.backyardgardener.com/plantname/penstemon-heterophyllus-blue-of-zurich-penstemon/>