| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Frangula purshiana | Bark | -- | -- | * | |
| Fucus vesiculosus | Plant | 0.9 | 7.6 | -0.5 | * |
| Gentiana lutea | Root | -- | -- | * | |
| Ginkgo biloba | Leaf | 0.5 | 2.0 | -0.4 | * |
| Glycine max | Seed | -- | -- | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. | |
| Glycyrrhiza glabra | Root | 2.5 | 15.8 | -0.3 | * |
| Gymnema sylvestre | Leaf | 0.6 | 3.0 | -0.4 | * |
| Harpagophytum procumbens | Root | 0.8 | 4.3 | -0.3 | * |
| Hibiscus sabdariffa | Flower | 1.0 | 9.1 | -0.5 | * |
| Hordeum vulgare | Stem | -- | 34.0 | -0.9 | * |
| Humulus lupulus | Fruit | -- | 4.5 | -0.6 | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. |
| Humulus lupulus | Flower | 0.8 | 4.5 | -0.6 | * |
| Hydrangea arborescens | Root | 8.0 | 22.3 | -0.2 | * |
| Hydrastis canadensis | Root | 8.0 | 28.7 | -0.2 | * |
| Inula helenium | Root | -- | -- | * | |
| Juglans cinerea | Seed | -- | 1450.0 | 1.1 | * |
| Juglans nigra | Seed | -- | 1387.0 | 1.0 | Furr, A.K., et al. 1979 |
| Juglans nigra | Fruit | -- | 22.0 | -0.5 | * |
| Juglans nigra | Pericarp | 0.3 | 2.2 | * | |
| Juniperus communis | Fruit | 1.4 | 4.5 | -0.6 | * |