| Latin Name | Common Name | Edibility Rating | Medicinal Rating |
| Abies balsamea | Balsam Fir | 3 | 5 |
| Abies fraseri | She Balsam, Fraser fir, Southern Balsam Fir | 1 | 3 |
| Abies grandis | Grand Fir, Giant Fir, Lowland White Fir | 2 | 2 |
| Abies lasiocarpa | Subalpine Fir, Alpine Fir | 2 | 2 |
| Abies spectabilis | Himalayan Fir | 0 | 2 |
| Acer macrophyllum | Oregon Maple, Bigleaf maple, Oregon Maple | 3 | 1 |
| Achillea erba-rotta moschata | Musk Milfoil | 0 | 2 |
| Achillea millefolium | Yarrow, Boreal yarrow, California yarrow, Giant yarrow, Coast yarrow, Western yarrow, Pacific yarrow | 3 | 4 |
| Achillea santolina | | 0 | 1 |
| Achillea sibirica | Siberian Yarrow | 1 | 1 |
| Acmella oleracea | Toothache plant, Paracress | 3 | 3 |
| Aconitum heterophyllum | | 1 | 2 |
| Aconitum palmatum | | 0 | 1 |
| Acorus calamus | Sweet Flag - Calamus | 3 | 4 |
| Acorus gramineus | Grass-leaved Sweet Rush, Japanese Sweet Flag, Dwarf Sweet Flag | 3 | 3 |
| Adiantum capillus-veneris | Maidenhair Fern, Common maidenhair, Southern Maidenhair Fern, Venus Maidenhair Fern, Venus's Hair Fe | 2 | 2 |
| Adiantum pedatum | Northern Maidenhair,American Maidenhair Fern | 0 | 2 |
| Adiantum venustum | Evergreen Maidenhair Fern | 0 | 1 |
| Aesculus hippocastanum | Horse Chestnut, European Horsechestnut, Common Horsechestnut | 3 | 4 |
| Ageratina altissima | White Snakeroot, Richweed | 0 | 2 |
| Agrimonia eupatoria | Agrimony, Churchsteeples | 2 | 3 |
| Ajuga bracteosa | Bugle, Lungememen | 0 | 1 |
| Albizia julibrissin | Mimosa, Silktree, Mimosa Tree, | 2 | 2 |
| Alchemilla alpina | Alpine Lady's Mantle, Mountain Lady's Mantle | 2 | 3 |
| Alchemilla xanthochlora | Lady's Mantle | 2 | 3 |
| Alchornea castaneifolia | Iporuru | 0 | 4 |
| Alchornea cordifolia | Christmas Bush | 2 | 4 |
| Aletris farinosa | Unicorn Root - Colic Root, White colicroot | 1 | 3 |
| Allium ampeloprasum | Wild Leek, Broadleaf wild leek | 5 | 3 |
| Allium cepa | Onion, Garden onion | 5 | 3 |
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