| Scientific Name | Common Name(s) | Life History | Growth Form | |
|---|---|---|---|---|
|
Strigosella africana | African mustard, Turkish mustard, malcolm stock | Annual | forb |
|
Symphytum asperum | prickly comfrey, rough comfrey, Persian comfrey | Perennial | forb |
|
Syringa reticulata | Japanese Tree Lilac | Perennial | tree |
| Tamarix aphylla | Athel | Perennial | tree | |
|
Tamarix chinensis | five-stamen tamarisk, Chinese tamarisk | Perennial | tree |
|
Tanacetum vulgare | Common Tansy | Perennial | forb |
|
Taxus cuspidata | Japanese Yew | Perennial | shrub |
| Thamnocalamus tessellatus (Nees) Soderstr. & R.P.Ellis | Bergbamboes, Wildebamboes, Mountain Bamboo | Perennial | grass | |
| Thinopyrum junceiforme | sand couch, sand couch-grass, Russian wheatgrass, sea wheatgrass | Perennial | grass | |
| Tilia cordata 'PNI 6025' GREENSPIRE | litlleleaf linden, Greenspire linden, small-leaved lime | Perennial | tree | |
|
Tipuana tipu | tiputree, tipa blanca, tiputree, tipa, tipu, rosewood, pride of Bolivia, racehorse tree, tipuana tree, yellow jacaranda | Perennial | tree |
|
Tradescantia fluminensis | wandering jew, spiderwort, wandering sailor | Perennial | forb |
|
Triadica sebifera | Chinese tallowtree, Chinese tallow, candleberry-tree, popcorntree | Perennial | tree |
| Tribolium obliterum | Capetown grass, Cape grass | Perennial | grass | |
| Trifolium suffocatum | small cluster clover, suffocating clover | Perennial | forb | |
|
Ulmus parvifolia | Dynasty Chinese Elm, lang yu, Chinese elm, lacebark, lacebark elm, Chinese iep, Drake elm | Perennial | tree |
|
Ulmus pumila | Siberian Elm | Perennial | tree |
|
Urospermum picroides | prickly goldenfleece, false hawkbit | Annual | forb |
|
Ventenata dubia | North Africa grass, wiregrass | Annual | grass |
|
Verbascum virgatum | Wand mullein, green mullein, purplestem mullein, twiggy mullein | Biennial | forb |
|
Verbena bonariensis | Argentine vervain, cluster-flower verbena, purpletop vervain | Biennial | forb |
|
Verbena litoralis | seashore vervain, Brazilian vervain, common verbena | Perennial | forb |
|
Vernicia fordii | tung-oil tree | Perennial | tree |
|
Viburnum dilatatum 'Henneke' CARDINAL CANDY | linden viburnum | Perennial | shrub |
| Viburnum lantana 'Mohican' | Wayfaringtree | Perennial | shrub |