 | bull thistle Scientific Name Cirsium vulgare Family Composites, Sunflower Flower Color Purple Plant Type Herb Short Description Biennial. Location McCall Native No Weed Noxious |
 | Canada thistle Scientific Name Cirsium arvense Family Composites, Sunflower Flower Color Purple Plant Type Herb Short Description Perennial, deep-seated creeping underground roots. Leaves: Spiny, pinnatifid Location McCall Native No Weed Noxious |
 | purple loosestrife Scientific Name Lythrum salicaria Family Loosestrife Flower Color Purple Plant Type Herb Native No Weed Noxious |
 | Scotch thistle Scientific Name Onopordum acanthium Family Composites, Sunflower Flower Color Purple Plant Type Forb Native No Weed Noxious |