Senecio sylvaticus aka Heath Groundsel

Senecio sylvaticus, also known as the woodland ragwort, heath groundsel, or mountain common groundsel, is a species of flowering plant in the aster family. It can be found in Eurasia and is also introduced and considered an occasional roadside weed in western and eastern sections of North America. It grows best in cool, wet areas and is an annual herb producing a single erect stem up to 80 centimeters tall from a taproot, which is coated in short, curly hairs. The toothed, deeply lobed leaves, which are up to 12 centimeters long and borne on petioles, are evenly distributed along the stem. The inflorescence is a wide, spreading array of many flower heads, each lined with green- or black-tipped phyllaries, and the heads contain yellow disc florets and most have very tiny yellow ray florets as well. It is important to note that Senecio sylvaticus may be poisonous, and therefore, should be handled with care. Hand-digging weeds works best with smaller shrubs, non-woody stemmed vines, or bunching perennial grasses. When digging plants, remove as much of the root system as possible to prevent resprouting. For those interested in cultivating this rare houseplant, the Woodland Ragwort thrives with very little water and abundant sunlight. It prefers soil that is extremely well-draining and should be less than 3 feet from a window. Repotting each time it doubles in size should provide enough nutrients without the need for added fertilizers.