| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Foeniculum vulgare | Seed | 17.3 | 160.0 | 1.3 | * |
| Bertholletia excelsa | Seed | 3.0 | 497.0 | 4.7 | * |
| Eriodictyon californicum | Leaf | 2.6 | 12.0 | 0.5 | * |
| Phyllanthus emblica | Fruit | 2.4 | 12.0 | 2.6 | * |
| Nepeta cataria | Plant | 2.0 | 12.3 | 0.1 | * |
| Silybum marianum | Leaf | 2.0 | 7.1 | 0.2 | * |
| Hibiscus sabdariffa | Flower | 1.6 | 14.3 | 1.7 | * |
| Myrica cerifera | Bark | 1.0 | 3.4 | -0.1 | * |
| Smilax spp | Root | 0.7 | 3.1 | -0.1 | * |
| Cimicifuga racemosa | Root | 0.7 | 3.2 | -0.1 | * |
| Smilax officinalis | Root | 0.7 | 3.1 | -0.1 | * |
| Allium sativum var. sativum | Root | 0.6 | 1.6 | -0.2 | * |
| Larrea tridentata | Plant | 0.6 | 1.9 | -0.3 | * |
| Rumex crispus | Root | 0.6 | 2.5 | -0.2 | * |
| Hydrangea arborescens | Root | 0.6 | 1.6 | -0.2 | * |
| Crataegus laevigata | Fruit | 0.6 | 2.0 | 0.1 | * |
| Echinacea purpurea | Root | 0.5 | 2.1 | -0.2 | * |
| Stachys officinalis | Plant | 0.5 | 2.8 | -0.3 | * |
| Cnicus benedictus | Plant | 0.5 | 3.4 | -0.3 | * |
| Ginkgo biloba | Leaf | 0.5 | 2.0 | -0.2 | * |