| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Borago officinalis | Seed | 22100.0 | 100000.0 | -0.2 | * |
| Borago officinalis | Seed Essent. Oil | -- | 200000.0 | 1.4 | Jim Duke's personal files. |
| Brassica oleracea var. botrytis l. | Leaf | 240.0 | 2578.0 | -0.3 | * |
| Brassica chinensis | Leaf | 140.0 | 2992.0 | -0.2 | * |
| Brassica rapa | Leaf | 140.0 | 2992.0 | -0.2 | USDA's Ag Handbook 8 and sequelae) |
| Brassica oleracea var. botrytis l. | Flower | 120.0 | 1550.0 | 0.5 | * |
| Brassica oleracea | Stem | 70.0 | 780.0 | * | |
| Brassica oleracea var. capitata l. | Leaf | 130.0 | 1738.0 | -0.4 | USDA's Ag Handbook 8 and sequelae) |
| Brassica nigra | Leaf | 200.0 | 2945.0 | -0.3 | USDA's Ag Handbook 8 and sequelae) |
| Brassica oleracea var. italica | Leaf | 240.0 | 2578.0 | -0.3 | USDA's Ag Handbook 8 and sequelae) |
| Brassica oleracea var. sabellica l. | Leaf | 490.0 | 3155.0 | -0.2 | * |
| Brassica oleracea var. gemmifera | Leaf | 190.0 | 1357.0 | -0.5 | USDA's Ag Handbook 8 and sequelae) |
| Brassica napus var. napobrassica | Root | 250.0 | 2415.0 | 0.1 | USDA's Ag Handbook 8 and sequelae) |
| Brassica rapa | Root | 60.0 | 740.0 | -0.4 | * |
| Brassica oleracea var. viridis l. | Plant | -- | -- | * | |
| Bryonia alba | Root | -- | -- | * | |
| Bupleurum chinense | Root | -- | -- | * | |
| Buxus sempervirens | Seed | -- | -- | * | |
| Cajanus cajan | Seed | 120.0 | 381.0 | -1.0 | * |
| Calendula officinalis | Seed | 42300.0 | 73000.0 | -0.4 | * |