Helianthus Lemon Queen is a perennial sunflower cultivar that grows up to 8 feet tall and produces lemony yellow 2-inch flowers from late August through fall. It tolerates a wide range of soil conditions, including very dry soil, making it a good choice for waterwise gardens. The plant is sturdy and attracts bees and butterflies. Minimal care is needed beyond giving the plant full sun and plenty of room to grow.