Taenidia          

Taiwanese Photinia          

Tall Blazing Star          

Tall Buttercup          

Tall Elephantsfoot          

Tall Fescue          

Tall Flatsedge          

Tall Hairy Agrimony      

Tall Horned Beaksedge          

Tall Ironweed          

Tall Jointweed          

Tall Lespedeza          

Tall Morning-glory          

Tall Oatgrass      

Tall Pinebarren Milkwort          

Tall Rattlesnakeroot          

Tall Thimbleweed          

Tall Thistle          

Tall Thoroughwort          

Tall Tickseed          

Tall Tumblemustard          

Tall Windmill Grass          

Tall Yelloweyed Grass          

Tamarisk          

Tansy          

Tansy Dogshade          

Tansymustard          

Tapered Rosette Grass          

Taperleaf Water Horehound      

Tapertip Cupgrass          

Tapertip Flatsedge      

Tapertip Rush      

Tarheel Sedge          

Tarweed Fiddleneck      

Teal Lovegrass      

Teasel          

Tenangle Pipewort      

Tenlobe False Foxglove          

Tenpetal Thimbleweed          

Terrestrial Water-starwort          

Texan Flatsedge          

Texan Great Ragweed          

Texas Bluegrass          

Texas Gourd