Knotweed [Polygonum]

Though considered one of the worst invasive species in the world, Japanese Knotweed is also a wild spring edible and has many medicinal properties, and is especially known for its ability to support those with Lyme Disease.

The plant grows rapidly, displaces native species, and is difficult to eradicate due to the way it can propagate through its root system.

Knotweed’s greatest strength arguably is that it is a rich source of the antioxidant Resveratrol. The phytochemical Resveratrol has garnered considerable scientific attention for its potential to support healthy blood vessel function and promote heart health. A broadly systemic plant, Japanese knotweed root modulates and enhances immune function, is anti-inflammatory, and protects the body against endotoxin damage, and can treat bronchitis, cough, gum disease (gingivitis), and sore mouth and throat.

Japanese Knotweed also contains a chemical known as emodin. Emodin can regulate bowel motility, among other things. The Japanese used an alcohol extract of this plant as a natural laxative.