Common groundsel

Senecio vulgaris is a frost resistant deciduous annual plant that grows willingly in disturbed sites, waste places, roadsides, gardens, nurseries, orchards, vineyards, landscaped areas, agricultural lands, at altitudes up to 1,600 feet (500 m) and is, additionally, self-pollinating producing 1,700 seeds per plant with three generations per year. Seeds are dispersed by wind and also cling to clothing and animal fur, and as contaminates of commercially exchanged seeds; the relocation of this plant throughout the planet has been difficult if not impossible to contain.