yellow flowers. heliopsis, an excellent tall perennial for the backdrop of a flower bed

heliopsis yellow flowers perennial backdrop flower bed blooms summer garden plant growth tall floral beauty nature outdoor sunflower landscape petal stem leaf green vibrant botanical maintenance shrub fullsun gardening cultivar hybrid vegetation bloomtime variety species flora environment horticulture blossoms attractive stalk golden sunny enduring hardy lush foliage droughttolerant flowers excellent for all