| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Boehmeria nivea | Leaf | 2.8 | 22.0 | -0.1 | * |
| Carica papaya | Leaf | 5.0 | 21.0 | -0.1 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Sesamum indicum | Leaf | -- | 21.0 | -0.1 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Brassica oleracea var. botrytis l. | Leaf | 1.1 | 21.0 | -0.1 | * |
| Coriandrum sativum | Leaf | 1.0 | 21.0 | -0.1 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Borago officinalis | Leaf | 1.0 | 21.0 | -0.1 | USDA's Ag Handbook 8 and sequelae) |
| Brassica oleracea var. italica | Leaf | 1.1 | 21.0 | -0.1 | * |
| Tetragonia tetragonioides | Leaf | 1.0 | 20.0 | -0.1 | * |
| Amaranthus spinosus | Leaf | 1.6 | 20.0 | -0.1 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Erythroxylum coca | Leaf | 15.0 | 20.0 | -0.1 | * |
| Anacardium occidentale | Seed | 2.0 | 3.3 | -0.1 | * |
| Ipomoea batatas | Leaf | 2.6 | 19.0 | -0.1 | * |
| Chenopodium ambrosioides | Leaf | 3.0 | 19.0 | -0.1 | * |
| Taraxacum officinale | Leaf | 1.0 | 18.0 | -0.1 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Peperomia pereskiifolia | Leaf | 2.5 | 17.0 | -0.1 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Sonchus oleraceus | Leaf | 1.0 | 16.0 | -0.1 | * |
| Ipomoea aquatica | Leaf | 1.0 | 16.0 | -0.1 | * |
| Zingiber officinale | Rhizome | -- | 5.0 | -0.1 | * |
| Manihot esculenta | Leaf | 3.0 | 15.0 | -0.1 | * |
| Brassica chinensis | Leaf | 0.7 | 15.0 | -0.1 | * |