The Manual on Uniform Traffic Control Devices (MUTCD) is approved by the Federal Highway Administrator. as the National Standard in accordance with Title 23 U.S. Code, Sections 109(d), 114(a), 217, 315, and 402(a), 23 CFR 655, and 49 CFR 1.48(b)(8), 1.48(b)(33), and 1.48(c)(2).
The dominant vegetation types are grassy prairie and grass steppe in which numerous species of the grass genus Stipa are particularly conspicuous. Pampas grass (Cortaderia selloana) is an iconic species of the Pampas. Vegetation typically includes perennial grasses and herbs.
Pampas Grass. Cortaderia selloana â¢ Zones 6 to 11. Add some drama to your yard with these fast-growing, eye-catching plumes. Feathery pampas grass grows up to 10 feet high and 5 feet wide, but some of the more compact cultivars, including Pumila and Compacta, produce plants that are about 6 feet tall.