Prickly Pear Workshop with Dena Cowan Saturday, April 3 8-10 am $45 for members, $60 for non-members Master Heritage Gardener Dena Cowan is also the Presidio Museum's Heritage Gardens Manager and Foodways Instructor.  In this workshop, Cowan will discuss the astoundingly versatile and resilient prickly pear plants all around us, Read more…