| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Eleutherococcus senticosus | Tissue Culture | -- | 3000.0 | * | |
| Eleutherococcus senticosus | Stem Bark | -- | 23.3 | * | |
| Solanum tuberosum | Tuber | -- | 19.0 | * | |
| Eleutherococcus senticosus | Root | -- | 1.1 | * | |
| Tanacetum parthenium | Shoot | -- | -- | * | |
| Eleutherococcus senticosus | Stem | -- | -- | * | |
| Aesculus hippocastanum | Stem | -- | -- | Jim Duke's personal files. |