| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Apium graveolens | Shoot | -- | -- | * | |
| Avena sativa | Seed | -- | -- | * | |
| Camellia sinensis | Shoot | 5500.0 | 10300.0 | * | |
| Capsicum annuum | Fruit | -- | -- | * | |
| Centella asiatica | Shoot | -- | -- | Jim Duke's personal files. | |
| Citrullus lanatus | Fruit Juice | -- | -- | * | |
| Citrullus lanatus | Fruit | -- | -- | * | |
| Fagopyrum esculentum | Seed | -- | -- | * | |
| Glycine max | Plant | -- | -- | * | |
| Helianthus annuus | Seed | -- | -- | * | |
| Juglans nigra | Essential Oil | -- | 9000.0 | * | |
| Mentha spicata | Leaf | -- | -- | Duke, J. A. Writeups or information summaries on approximately 2,000 economic plants, USDA, ARS, Beltsville, MD 20705. | |
| Mentha spicata | Essential Oil | -- | -- | * | |
| Ocimum basilicum | Shoot Essent. Oil | -- | -- | * | |
| Panax ginseng | Shoot | -- | -- | * | |
| Petroselinum crispum | Leaf | -- | -- | * | |
| Psidium guajava | Fruit | -- | 32000.0 | * | |
| Rosmarinus officinalis | Resin, Exudate, Sap | -- | -- | * | |
| Sambucus nigra | Flower Essent. Oil | -- | -- | * | |
| Syzygium aromaticum | Fruit | -- | -- | * |