| Stylophorum diphyllum Stiftvallmo |
| Succisella inflexa Myrvädd |
| Swietenia mahagoni Kubamahogny |
| Symphyotrichum lateriflorum 'Horizontale' |
| Symphytum officinale Äkta vallört |
| Synsepalum dulcificum Mirakelbär |
| Syringa tomentella ssp. sweginzowii Luddsyren, Vipsyren, Nejliksyren |
| Syringa villosa ssp. wolfii |
| Syringa vulgaris 'Reamur' Syren |
| Syzygium aromaticum Kryddnejlika |
| Syzygium australe Bärmyrten |
| Tabernaemontana divaricata Fjärilsgardenia |
| Tacca leontopetaloides Fliktacca |
| Tagetes lucida Glanstagetes |
| Tagetes lucida 'Sweet Mace' Glanstagetes |
| Tagetes minuta stinktagetes |
| Tagetes tenuifolia Liten tagetes |
| Tagetes tenuifolia 'Paprika' Liten tagetes |
| Tamarindus indica Tamarind |
| Tanacetum corymbosum renfanekrage |
| Taxiphyllum 'Flame' |
| Taxiphyllum 'Spiky' |
| Taxodium distichum Sumpcypress |
| Taxus baccata 'Fastigiata Robusta' Idegran |
| Taxus baccata 'Summergold' idegran |
| Taxus cuspidata Japansk idegran |
| Taxus media 'Hillii' Hybrididegran |
| Taxus media 'Viridis' Hybrididegran |
| Tectaria zeilanica |
| Tellima grandiflora Anagrambräcka |
| Ternstroemia gymnanthera Kaptrumpet |
| Tetranema roseum Pysslingmössa |
| Teucrium fruticans |
| Thalia dealbata Talia |
| Thalia geniculata Stor talia |