| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Trifolium pratense | Flower | -- | -- | * | |
| Paeonia lactiflora | Flower | -- | -- | Chemical Constituents of Oriental Herbs (3 diff. books) | |
| Vitis vinifera | Fruit | -- | -- | * | |
| Pisum sativum | Flower | -- | -- | * | |
| Prunus cerasus | Fruit | -- | -- | * | |
| Vaccinium myrtillus | Fruit | -- | -- | * | |
| Viola tricolor | Plant | -- | -- | * |