| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Passiflora quadrangularis | Seed | 1.2 | 6.0 | 0.9 | * |
| Blighia sapida | Seed | 0.9 | 6.0 | 0.9 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Pereskia aculeata | Fruit | 0.3 | 9.4 | 0.9 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Humulus lupulus | Flower | 2.0 | 10.1 | 0.9 | * |
| Momordica charantia | Fruit | 0.4 | 9.0 | 0.9 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Vigna unguiculata | Fruit | 1.1 | 9.0 | 0.9 | USDA's Ag Handbook 8 and sequelae) |
| Caulophyllum thalictroides | Root | 1.0 | 7.9 | 0.8 | * |
| Spinacia oleracea | Plant | 1.8 | 23.4 | 0.8 | USDA's Ag Handbook 8 and sequelae) |
| Solanum melongena | Fruit | 0.2 | 8.8 | 0.8 | * |
| Solanum nigrum | Plant | 1.0 | 23.0 | 0.8 | * |
| Tropaeolum majus | Shoot | 3.5 | 25.5 | 0.7 | * |
| Symphytum officinale | Root | -- | 7.2 | 0.7 | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. |
| Prunus armeniaca | Seed | -- | 5.3 | 0.7 | * |
| Lycopersicon esculentum | Fruit | 1.0 | 8.0 | 0.6 | * |
| Pisum sativum | Fruit | 0.8 | 8.0 | 0.6 | * |
| Citrullus lanatus | Fruit | 2.0 | 8.0 | 0.6 | * |
| Capsicum frutescens | Fruit | 1.0 | 8.0 | 0.6 | * |
| Fragaria spp | Fruit | 0.7 | 8.0 | 0.6 | * |
| Ipomoea batatas | Root | 0.3 | 7.0 | 0.6 | * |
| Phaseolus lunatus | Seed | 0.3 | 5.1 | 0.6 | * |