| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Ocimum basilicum | Leaf | -- | -- | * | |
| Ocimum basilicum | Leaf Essent. Oil | 5000.0 | 100000.0 | -0.2 | * |
| Origanum majorana | Leaf Essent. Oil | -- | 75000.0 | -0.4 | * |
| Origanum vulgare | Shoot Essent. Oil | -- | 1800.0 | -0.9 | * |
| Origanum majorana | Essential Oil | -- | -- | * | |
| Panax ginseng | Root Essent. Oil | -- | -- | * | |
| Pimenta dioica | Leaf Essent. Oil | -- | -- | * | |
| Piper cubeba | Fruit Essent. Oil | -- | 3000.0 | -1.0 | * |
| Rosmarinus officinalis | Shoot Essent. Oil | -- | 369100.0 | 1.4 | * |
| Rosmarinus officinalis | Leaf Essent. Oil | -- | 293000.0 | 1.4 | * |
| Rosmarinus officinalis | Essential Oil | 145000.0 | 153000.0 | 1.0 | * |
| Salvia officinalis | Et | -- | 50000.0 | * | |
| Salvia officinalis | Essential Oil | 73000.0 | 217000.0 | 1.9 | * |
| Salvia officinalis | Leaf Essent. Oil | 91000.0 | 357000.0 | 1.9 | * |
| Salvia officinalis | Leaf | -- | -- | * | |
| Satureja montana | Essential Oil | -- | -- | * | |
| Thymus vulgaris | Essential Oil | -- | 32900.0 | -0.7 | * |
| Vaccinium myrtillus | Fruit Juice | -- | -- | * | |
| Valeriana officinalis | Leaf Essent. Oil | 37700.0 | 65100.0 | -0.5 | * |
| Vitex agnus-castus | Flower | -- | -- | Jim Duke's personal files. |