| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Carya illinoensis | Seed | -- | 22.0 | 0.5 | * |
| Cinnamomum sieboldii | Bark | -- | 3.0 | -1.6 | * |
| Cinnamomum verum | Bark | -- | 20.0 | 0.2 | * |
| Cinnamomum burmannii | Bark | -- | 20.0 | 0.2 | * |
| Cinnamomum sieboldii | Root Bark | -- | 9.0 | * | |
| Cinnamomum aromaticum | Bark | -- | 30.0 | 1.2 | * |
| Citrus reticulata | Fruit | 0.25 | 2.4 | -1.3 | ACTA AGRIC SCAND SUPPL 22: 1980 |
| Citrus paradisi | Fruit | 0.26 | 22.0 | 0.2 | ACTA AGRIC SCAND SUPPL 22: 1980 |
| Citrus sinensis | Fruit | 0.1 | 7.7 | -0.9 | ACTA AGRIC SCAND SUPPL 22: 1980 |
| Cocos nucifera | Seed | -- | 16.0 | -0.0 | Furr, A.K., et al. 1979 |
| Corylus avellana | Seed | 4.0 | 11.0 | -0.4 | * |
| Cucumis sativus | Fruit | 0.4 | 19.0 | -0.0 | * |
| Daucus carota | Root | 0.42 | 12.7 | -0.0 | * |
| Fallopia japonica | Plant | 8.0 | 33.0 | 0.8 | Chem. & Pharm. Bull. 38: 2205. |
| Fragaria spp | Fruit | 0.2 | 6.5 | -0.9 | ACTA AGRIC SCAND SUPPL 22: 1980 |
| Glechoma hederacea | Plant | 10.0 | 11.0 | -1.1 | Chem. & Pharm. Bull. 38: 2205. |
| Juglans cinerea | Seed | -- | 2.5 | -1.1 | * |
| Juglans nigra | Seed | -- | 9.3 | -0.6 | Furr, A.K., et al. 1979 |
| Lycopersicon esculentum | Fruit | 0.3 | 22.0 | 0.2 | * |
| Malus domestica | Fruit | 0.27 | 10.0 | -0.7 | ACTA AGRIC SCAND SUPPL 22: 1980 |