Host Plants to Attract Butterflies – Grasses These Grasses Are Food For Butterfly Caterpillars Also see: Flowers, Grasses, Herbs, Shrubs, Trees, Vines, and Wildflowers Bermuda Grass Bottlebrush Grass Kentucky Bluegrass Little Bluestem Grass Orchard Grass Panic Grass Purple Top Grass Sheep Sorrel Switchgrass Also see: Flowers, Grasses, Herbs, Shrubs, Trees, Vines, and Wildflowers