| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Stevia rebaudiana | Leaf | -- | 132.0 | -0.0 | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. |
| Symphytum officinale | Root | -- | 35.0 | -0.2 | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. |
| Symphytum officinale | Leaf | 1.0 | 9.0 | -0.4 | * |
| Tabebuia heptaphylla | Bark | 1.5 | 8.4 | -0.4 | * |
| Tanacetum parthenium | Plant | -- | 4.6 | -0.5 | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. |
| Taraxacum officinale | Root | 0.7 | 4.7 | -0.3 | * |
| Thymus vulgaris | Leaf | 3.4 | 20.2 | -0.4 | * |
| Trifolium pratense | Flower | 0.2 | 1.2 | -0.6 | * |
| Trigonella foenum-graecum | Seed | 0.6 | 4.7 | -1.1 | * |
| Turnera diffusa | Leaf | 0.9 | 4.1 | -0.4 | * |
| Ulmus rubra | Bark | -- | -- | * | |
| Urtica dioica | Leaf | 2.0 | 10.3 | -0.4 | * |
| Vaccinium myrtillus | Fruit | -- | -- | * | |
| Vaccinium macrocarpon | Fruit | 0.5 | 4.0 | -0.6 | * |
| Vaccinium vitis-idaea | Fruit | 5.0 | 133.0 | -0.2 | * |
| Valeriana officinalis | Root | 0.1 | 0.9 | -0.3 | * |
| Verbascum thapsus | Leaf | 3.3 | 7.4 | -0.4 | * |
| Viburnum opulus | Bark | -- | 99.0 | 2.0 | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. |
| Viscum album | Leaf | -- | -- | * | |
| Vitis vinifera | Stem | -- | 365.0 | -0.5 | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. |