(1 Quart) POTTER'S PURPLE Butterfly Bush - Attractive, Long Deep Purple Flower Clusters Bloom All Summer Long. Dark Green Leaves with Silvery Underside. Potters Purple Butterfly Bush - Quart Size Plant Fast Growing, Summer into Fall Blooms of Deep Purple. Full Sun, Hardy in zone 5-9 Mature size is 6-8 ft tall and wide Attracts Pollinators including butterflies and hummingbirds.