Bidens frondosa · ilgakotis lakišius

• evil's beggarticks, devil's-pitchfork, devil's bootjack, sticktights, bur marigold, pitchfork weed, tickseed sunflower, leafy beggarticks, common beggar-ticks
• Schwarzfrüchtige Zweizahn
• lapainais sunītis
• uczep amerykański

https://en.wikipedia.org/wiki/Bidens_frondosa Native to North America, invasive in Lithuania. Bidens frondosa grows best where there is ample soil moisture and sun, especially in areas where something has disrupted the existing plant community leaving bare ground. It can survive in water saturated soils, frequently found growing at the water's edge, in drainage ditches or on flood plains. 5431