| Tagetes patula - Germination in less than two weeks at 74ºF . Surface sow seeds, light needed for best results., |
| Tanacetum coccineum - Germination in less than two weeks at 65-75ºF, |
| Tanacetum huronense - Germination in less than two weeks at 65-75ºF, |
| Tanacetum niveum - 6 weeks at 39ºF, move to 65-75ºF . Surface sow seeds, light needed for best results. for germination. |
| Tanacetum parthenium 'Double White'- Germination in less than two weeks at 65-75ºF . Surface sow seeds, light needed for best results., |
| Tanacetum parthenium - Germination in less than two weeks at 65-75ºF . Surface sow seeds, light needed for best results., |
| Tanacetum parthenium 'Santana' - Surface sow seeds, light needed for best germination, use F 70, germination starts in 10-14 days and is spread out over a few weeks |
| Tanacetum vulgare - Germination in less than two weeks at 65-75ºF . Surface sow seeds, light needed for best results., |
| Telekia speciosa - Surface sow seeds and use 65-75F, germination in 5-18 days. |
| Telekia speciosa - 8 weeks at 39ºF, move to 65-75ºF for germination. |
| Tellima grandiflora - Sow at 70ºF, if no germination in 3-4 weeks, move to the fridge for 30 days, then back to 70ºF. |
| Tellima grandiflora. Germination is spread out over many weeks at 65-75ºF . Surface sow seeds, light needed for best results., slow germination. |
| Teucrium chamaedrys - This is a slow germinator, use 40-55ºF, germination is spread out over one to three months. Do not use High temps- this will inhibit germination till next year. |
| Teucrium flavum - Lightly cover seeds and use 70F, germination in 1-2 weeks, if no germination in 4 weeks put in the refrigerator for three weeks than move back to 70F. |
| Teucrium hyrcanicum - 8 weeks at 39ºF, move to cold frame for oscillating temps. |
| Teucrium hyrcanicum 'Purple Tails' - First use 4 weeks at 70ºF, if no germination then 5 weeks at 32-39ºF, after move up to 53-60º F for germination in about two weeks. Grow seedlings out cool (55-60ºF). |
| Teucrium scorodonia - Germination in less than two weeks at 72ºF, |
| Thalictrum aquilegiaefolium 'Mixed Colors' - Lightly cover seeds and use 65F, if no germination in four weeks move to the fridge for four weeks. |
| Thalictrum aquilegifolium - 4-8 weeks at 39ºF, move to 65-75ºF for germination. |
| Thalictrum delavayi - Lightly cover seeds and use 65F, if no germination in four weeks move to the fridge for three weeks. |
| Thalictrum diptercarpum - Lightly cover seeds and use 65F, if no germination in four weeks move to the fridge for three weeks. |
| Thalictrum dipterocarpum - Use 3-4 weeks at 65-75ºF, if no germination., 30 days at 39ºF, then 65-75ºF |
| Thalictrum flavum - Use 3-4 weeks at 65-75ºF, if no germination., 30 days at 39ºF, then 65-75ºF |
| Thalictrum minus - Use 3-4 weeks at 65-75ºF, if no germination., 30 days at 39ºF, then 65-75ºF |
| Thalictrum rochebrunianum - Use 3-4 weeks at 65-75ºF, if no germination., 30 days at 39ºF, then 65-75ºF |
| Thermopsis montana - nick and soak, Germination is spread out ove many weeks at 70-75ºF, slow germination. 20-90d |
| Thunbergia alata - Germination in less than two weeks at 65-75ºF, |
| Thymus pulegioides - Surface sow seeds, light needed for best germination. Use F 65 with germination in 5-20 days. |
| Thymus serpyllum - Surface sow seeds, light needed for best germination. Use F 65 with germination in 5-20 days. |
| Thymus vulgaris - Germination in less than two weeks at 65-75ºF, |
| Tiarella polyphylla 'Filigran' - Surface sow seeds onto moist seed mix and keep at 55-68F for four weeks, if no germination move to fridge for 5 weeks, after move to 65F. Germination starts in 14-30 days and is spread out over many weeks. Or sow in tray and put outside in a sheltered location in the fall. |
| Tiarella wherryi - Surface sow seeds onto moist seed mix and keep at 55-68F for four weeks, if no germination move to fridge for 5 weeks, after move to 65F. Germination from 14-30 days. Or sow in trays and put outside in a sheltered location in the fall. |
| Trichostema dichotoma - Germination in less than two weeks at 65-75ºF, |
| Tricyrtis hirta - 4 weeks at 65-75ºF, 4 weeks at 39º, move to 53º for germination. |
| Tricyrtis hirta 'Miyazaki - Sow at 70ºF for 4 weeks by placing seeds and a small amount of moist seeds medium in a sealed plastic bag, then move to the fridge for 5 weeks, then move to F 55 for germination in 1-5 weeks, can be difficult- so be patient. |
| Tricyrtis 'Japanese Hybrids' - Sow at 70ºF for 4 weeks by placing seeds and a small amount of moist seeds medium in a sealed plastic bag, then move to the fridge for 5 weeks, then move to F 55 for germination in 1-5 weeks, can be difficult- so be patient. Do not discard some seed might germinate next spring. |
| Tricyrtis latifolia - Sow at 70ºF for 4 weeks by placing seeds and a small amount of moist seeds medium in a sealed plastic bag, then move to the fridge for 5 weeks, then move to F 55 for germination in 1-5 weeks, can be difficult- so be patient. Do not discard some seed might germinate next spring. |
| Tricyrtis macropoda - Surface sow seeds onto moist seed medium in a pot and seal up in a plastic bag. Use 40-45 F. Germination is spread out over many weeks to a few months. |
| Tricyrtis maculata - Sow at 70ºF for 4 weeks by placing seeds and a small amount of moist seeds medium in a sealed plastic bag, then move to the fridge for 5 weeks, then move to F 55 for germination in 1-5 weeks, can be difficult- so be patient. Do not discard some seed might germinate next spring. |
| Trifolium rubens - Very lightly cover seeds and use F. 75, germination takes place over a few weeks. |
| Trollius europaeus - 6 weeks at 72ºF, 6-8 weeks at 39º, 4-6 weeks at 50ºF, repeat |
| Trollius 'New Hybrids Mixed' - Sow in a plastic bag with 0ne tablespoon of moist seed mix and store at room temp for 28 days. Move to a cold refrigerator or use 19-21ºF for 5 to 7 weeks, sow into a pot and use 50 ºF for germination . Or sow and keep in a sheltered spot outside for germination next year. Be patient, germination is spread out over a few months. |
| Tropaeolum majus - sow outdoors, Germination in less than two weeks at 65-75ºF in dark, |