As summer heads toward fall, many gardeners long for one last blast of color before switching to autumn bloomers. Coneflowers provide a wonderful range of bright, warm colors, with 'Sombrero Poco Yellow' providing bright yellow blooms that don't lose their oomph. As is true of most coneflowers, this variety is a reliable perennial, going full tilt from late spring up until freeze, then dying down for the winter. As part of the Poco series, 'Sombrero Poco Yellow' is on the shorter side, 14 to 16 inches tall and wide. Blooms are long-lasting on the compact mound and also make wonderful cut flowers. Not a favorite of deer, coneflowers do draw lots of bees and butterflies.