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A herbaceous species with black flowers borne in the leaf axils of vigorous twining stems. The University of Connecticut say on their website: "Perennial, herbaceous climbing vine. 3-9 ft. long, spiraling around self and up other plants in extensive patches. Vines can also trail along the ground; the plant cannot stand upright without support. Laboratory studies have shown allelopathic effects (release of chemicals that suppress neighboring plants’ growth). Capable of self-pollinating, although sexual reproduction is more common. Colonizes new sites by seed; once established, spreads locally via rhizomes. Plants initially grow slowly and do not reproduce by seed for the first several years. Swallow-wort prefers full sun, but also grows well in woodland, even densely shaded, areas. While drought tolerant, swallow-wort can also tolerate periods of brief flooding. Spreading quickly once established, it is typically found in disturbed areas, such as old pastures and fields or road ditches. Also common along roadsides, in gardens, meadows, urban areas, agricultural fields, and woodlands." |
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| 18th July 2019 | ||
