| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Camellia sinensis | Leaf | -- | -- | * | |
| Zingiber officinale | Shoot | -- | -- | * | |
| Zingiber officinale | Tuber | -- | -- | * | |
| Tilia sp. | Flower | -- | -- | * | |
| Apium graveolens | Shoot | -- | -- | * | |
| Cryptotaenia japonica | Root | -- | -- | * | |
| Cryptotaenia japonica | Shoot | -- | -- | * | |
| Aesculus hippocastanum | Leaf | -- | -- | Jim Duke's personal files. | |
| Trifolium pratense | Plant | -- | -- | * | |
| Angelica sinensis | Root | -- | -- | Jim Duke's personal files. | |
| Lentinus edodes | Fruit | -- | -- | * | |
| Salvia officinalis | Plant | -- | -- | Stitt, Paul. Why George should eat broccoli. | |
| Glycine max | Shoot | -- | -- | * | |
| Melia azedarach | Seed | -- | -- | * | |
| Alpinia galanga | Leaf | -- | -- | * | |
| Coriandrum sativum | Fruit | -- | -- | * | |
| Acacia senegal | Plant | -- | -- | Pakistan Encyclopedia Planta Medica. 1986. | |
| Cocos nucifera | Endosperm | -- | -- | Jim Duke's personal files. | |
| Cocos nucifera | Leaf | -- | -- | Jim Duke's personal files. | |
| Crocus sativus | Bulb | -- | -- | * |