| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Theobroma bicolor | Seed | 36000.0 | 523100.0 | 1.1 | * |
| Theobroma angustifolium | Seed | 31900.0 | 441700.0 | 0.8 | * |
| Thymus vulgaris | Leaf | -- | 832000.0 | 0.1 | * |
| Thymus vulgaris | Plant | 74111.0 | 81690.0 | -3.0 | USDA's Ag Handbook 8 and sequelae) |
| Tilia sp. | Leaf | -- | 120000.0 | -3.4 | * |
| Tilia sp. | Fruit | -- | 681000.0 | -0.4 | * |
| Trachyspermum ammi | Fruit | -- | 74000.0 | -3.0 | * |
| Tragopogon porrifolius | Root | 768000.0 | 776000.0 | 0.0 | * |
| Tribulus terrestris | Leaf | 720000.0 | 791000.0 | -0.1 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Trichosanthes anguina | Fruit | -- | 946000.0 | 0.8 | * |
| Trifolium pratense | Flower | -- | 820000.0 | 0.1 | * |
| Trigonella foenum-graecum | Seed | -- | 870000.0 | 2.5 | * |
| Triticum aestivum | Seed | 60000.0 | 159000.0 | -0.3 | * |
| Triticum aestivum | Plant | 666000.0 | 876000.0 | 0.4 | * |
| Tropaeolum majus | Shoot | -- | 863000.0 | -0.3 | * |
| Tropaeolum tuberosum | Root | 860000.0 | 921000.0 | 1.0 | * |
| Turnera diffusa | Leaf | -- | 790000.0 | -0.1 | * |
| Ulex europaeus | Plant | -- | 527000.0 | -1.0 | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. |
| Ullucus tuberosus | Root | 859000.0 | 863000.0 | 0.6 | * |
| Ulmus rubra | Bark | -- | 836000.0 | 0.7 | * |