| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Allium sativum var. sativum | Flower | -- | 884000.0 | 0.5 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Allium schoenoprasum | Leaf | 906500.0 | 920000.0 | 0.6 | * |
| Allium cepa | Bulb | 866000.0 | 918000.0 | 0.8 | * |
| Allium ampeloprasum | Flower | -- | 831000.0 | 0.1 | * |
| Allium sativum var. sativum | Shoot | -- | 777000.0 | -2.2 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Allium sativum var. sativum | Bulb | 585000.0 | 678000.0 | -1.4 | * |
| Allium sativum var. sativum | Root | -- | 630000.0 | -0.9 | * |
| Alocasia macrorrhiza | Root | 630000.0 | 870000.0 | 0.7 | * |
| Aloe spp. | Leaf | -- | 995000.0 | 0.9 | * |
| Aloe vera | Plant | -- | 995000.0 | 1.0 | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. |
| Alpinia galanga | Rhizome | -- | 859000.0 | 0.8 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Althaea officinalis | Root | -- | 892000.0 | 0.8 | * |
| Amaranthus spinosus | Leaf | 837000.0 | 850000.0 | 0.2 | * |
| Amaranthus sp. | Leaf | -- | 916000.0 | 0.5 | * |
| Amorphophallus konjac | Leaf | -- | 974000.0 | 0.8 | * |
| Amorphophallus campanulatus | Root | 750000.0 | 894000.0 | 0.8 | * |
| Amphicarpaea bracteata | Seed | -- | 500000.0 | 1.0 | * |
| Anacardium occidentale | Resin, Exudate, Sap | 79000.0 | 95000.0 | -0.9 | * |
| Anacardium occidentale | Leaf | -- | 699000.0 | -0.5 | * |
| Anacardium occidentale | Seed | 27000.0 | 52000.0 | -0.7 | * |