| Aztec marigold |
Tagetes erecta |
1 |
| black-eyed susan |
Rudbeckia hirta |
2 |
| cardoon |
Cynara cardunculus |
2 |
| common sunflower |
Helianthus annuus |
3 |
| golden everlasting |
Xerochrysum bracteatum |
4 |
| hairy cat's ear |
Hypochaeris radicata |
1 |
| Louisiana wormwood |
Artemisia ludoviciana |
2 |
| plantainleaf pussytoes |
Antennaria plantaginifolia |
1 |
| rabbittobacco |
Pseudognaphalium obtusifolium ssp. obtusifolium |
3 |
| Russian knapweed |
Rhaponticum repens |
1 |
| Scotch thistle |
Onopordum acanthium |
1 |
| smooth cat's ear |
Hypochaeris glabra |
1 |
| sneezewort yarrow |
Achillea ptarmica |
1 |
| spiny sowthistle |
Sonchus asper |
1 |
| thistle |
Sphaeranthus indicus |
4 |
| wild chamomile |
Matricaria recutita |
3 |