| Code | Description |
| w1 | Common ragweed (Ambrosia elatior) |
| w2 | Western ragweed (Ambrosia psilostachya) |
| w3 | Giant ragweed (Ambrosia trifida) |
| w4 | False ragweed (Franseria acanthicarpa) |
| w5 | Wormwood (Artemisia absinthium) |
| w6 | Mugwort (Artemisia vulgaris) |
| w7 | Ox eye daisy, Marguerite (Chrysanthemum leucanthemum) |
| w8 | Dandelion (Taraxacum vulgare) |
| w9 | Ribwort plantain (Plantago lanceolata) |
| w10 | Goosefoot, Lamb`s quarters (Chenopodium album) |
| w11 | Saltwort (Salsola kali) |
| w12 | Golden rod (Solidago virgaurea) |
| w13 | Cocklebur (Xanthium commune) |
| w14 | Common pigweed (Amaranthus retroflexus) |
| w15 | Scale (Atriplex lentiformis) |
| w16 | Rough marshelder (Iva ciliata) |
| w17 | Firebush (Kochia scoparia) |
| w18 | Sheep sorrel (Rumex acetosella) |
| w19 | Wall pellitory (Parietaria officinalis) |
| w20 | Common nettle (Urtica dioica ) |
| w21 | Wall pellitory (Parietaria judaica) |
| w30 | Tulip (Tulipa spp.) |
| w32 | White sweet clover (Melilotus alba) |
| w34 | Red clover (Trifolium pratense) |
| w36 | Primerose (Primula variabilis) |
| w45 | Alfalfa (Medicago sativa) |
| w65 | Krantz aloe (Aloe arborescens) |
| w203 | Rape (Brassica napus) |
| w204 | Sunflower (Helianthus annuus) |
| w206 | Chamomile (Matricaria chamomilla) |
| w210 | Beet (Beta vulgaris) |