Shepherd’s needles

Description:

This flower has various other English names including Spanish needles, butterfly needles, hairy beggarticks and beggarticks. A single plant can produce 3,000-6,000 seeds, which maintain viability for at least 3-5 years and germinate readily. They may be spread by wind or water, but are most often dispersed by people or animals who get the little seeds caught in their clothing or fur.

Habitat:

Growing in an open lot in an urban neighborhood