| It turns out, however, that the deer mouse views these larvae as yummy snacks and, while foraging for them, may accidentally ingest whole knapweed seeds. |
| Currently, most producers apply chemicals on rangeland in spring or summer, when knapweed begins to flower, but research is showing that fall application may be preferable. |
| Mostly here it is pines but there were some maples and the understory verge was thistle and burr shoulder to shoulder with thistle-like knapweed. |
| Of those, the worst offenders are toadflax, knapweed, yellow clematis, Canada thistle, ox-eye daisy and tall buttercup. |
| Adults feed primarily on the nectar of flowers, such as those of chicory, knapweed, dogbane, and aster. |
| The west suffers from too many sturdy weeds, especially leafy spurge and spotted knapweed, which together infest 7.5m acres in Montana alone. |
