WebResearch: Russian thistle is an exotic weed species and is a good candidate for biological control. A pith-boring moth and a case-bearing moth have been established as biocontrol agents in California, but are ineffective. Additional insect enemies from the weed's native central Asia should also be introduced and evaluated. Web27 Oct 2024 · Purple thistle ( Cirsium horridulum) is a larval host for the Little metalmark ( Calephelis virginiensis) and Painted lady ( Vanessa cardui) butterflies. The seeds are an …

Thistle - Wikipedia

WebCommon name (s): Musk thistle, nodding thistle. Scientific name: Carduus nutans. Family: Sunflower or Aster family (Asteraceae) Reasons for concern: This aggressive plant can … WebThistle is a group of flowering plants which have sharp prickles on around the flower and are in the Asteraceae family. The prickles often all over the plant – on the stem and flat parts … home gutter installation bucks county pa

Purple thistle - Florida Wildflower Foundation

WebMeadow thistle Scientific name: Cirsium dissectum On first glance, the meadow thistle looks a bit like a knapweed - it's not as prickly as other thistles and only carries one pinky … WebIts name comes from the Greek kersion which means thistle. The plant is spiny all over with a tall branching stem that contains large yellowish or red-purple flower heads. The plant often grows 2 to 5-1/2 feet tall (sometimes as high as 8 … WebCommon name: Star thistle; Scientific name: Centaurea calcitrapa L.; Plant status Catchment management authority boundaries. Regionally prohibited in the Port Phillip … home gutter repair cincinnati oh