- You Will Get 50 Seeds Of Chocolate Joe Pye Weed Eupatorium Rugosum Flower Seeds. - Description: - Name: Chocolate Joe Pye Weed. - Scientific Name: Eupatorium Rugosum "Chocolate". - Color: Pink & White Flowers On Brown Stems. - Plant Seeds: Outdoors After Frost / Indoors Weeks Before Last Frost. - Plant Height: 36 - 48". - Plant Spacing: 36". - Bloom Time: Late Summer – Fall. - Hardiness Zone: 5 – 10. - Light Requirements: Sun. - Soil & Water Preferences: Average. - Other: The Foliage Turns From Green To A Deep Burgundy As Fall Nears. It Attracts Bees, Butterflies.