Hardy Geranium Garden Rozanne Geranium (Geranium 'Rozanne') blooms all summer. One of six thematic gardens on the east side of the Mel Carnahan Quadrangle, this garden features many selections of hardy geranium including Blue Sunrise, Gravetye, Nimbus and Rozanne. Other plants include Knockout Rose (Rosa x 'Knockout'), Purple Candles Astilbe (Astilbe chinensis 'Purpurkerze' PURPLE CANDLES), September Charm Anemone (Anemonex 'September Charm'), Pee Wee Hydrangea (Hydrangea quercifolia 'Pee Wee') and Koblodd Liatris (Liatris spicata 'Kobold'). Donor: Mr. Darden Rhodes