Senna lindheimeriana, or Velvet Leaf Senna, is a velvety shrub that grows to be about 3 ft tall. The nectar-rich yellow flowers bloom between June and September and attract many butterflies and bees. Velvet leaf senna can be found on dry mesas and foothills between 4500-5500 ft in elevation and enjoy dry, rocky soils. Low water needs. Plant in full sun to part shade.