Host Plants to Attract Butterflies – Wildflowers These Wildflowers Are Food For Butterfly Caterpillars Also see: Flowers, Grasses, Herbs, Shrubs, Trees, Vines, and Wildflowers Cow Vetch Crown Vetch Curled dock Indian Paintbrush Milk Vetch Pearly Everlasting Queen Anne’s Lace Ruellia Spider flower Swamp Milkweed Tall Verbena Thistle Water Dock White Clover Also see: Flowers, Grasses, Herbs, Shrubs, Trees, Vines, and Wildflowers