Tubers and Rhizomes<BR> <BR>Weeds that produce tubers include purple nutsedge, yellow nutsedge and Florida betony. <BR> <BR>Rhizomatous turfgrasses include bahiagrass, bermudagrass, Kentucky bluegrass, tall fescue and zoysiagrass. <BR>Rhizomatous weeds include dallisgrass, nimblewill and kyllinga species.<BR>