Also commonly known as fireweed, due to its propensity to reclaim scorched earth, where it often aids the regeneration process of scorched land. After World War II, it was one of the first plants to bloom among the ruins in blitzed areas of London, earning it the name Bombweed, too. It has been used worldwide as a medicinal herb for centuries before this however, with the fermented version Ivan Chai/Koporye tea documented as far back as the 13thC in Russia.

Still usually brewed into a soothing tea for relief from everyday ailments like headaches, infections, flu and even delirium tremens during severe alcohol withdrawal, Rosebay willowherb extracts have also shown effectiveness in easing various digestive issues, including ulcers, gastritis and colitis, whilst being gentle enough in it’s action for children in appropriate doses. The astringent and antimicrobial effects have also been used topically applied to help with burns, rashes, and skin infections.

More recent research has revealed some fascinating compounds, such as oenothein B. It showed strong antimicrobial and antiviral activity, especially against the bacteria Staphylococcus aureus, through increasing the ability of Neutrophils to destroy it. This is important because the ability of S. aureus to survive after neutrophil phagocytosis is thought to contribute significantly to the relative virulence of this pathogen. Another constituent in Rosebay willowherb is pentagalloyl glucose (PGG). This polyphenol shows signs of anti-inflammatory, anti-cancer, and anti-diabetic properties.

These constituents are also among those thought to contribute to potential support for benign prostatic hyperplasia (BPH). Both oenothein B and PGG are thought to help by calming inflammation and gently influencing hormonal activity in the prostate. The plant’s natural anti-inflammatory properties may help reduce swelling in the prostate tissue, relieving pressure on the urinary tract and easing symptoms.

Very prolific along hedgerows this time of year, try to collect the tops half of the plant just before the flowers are all out. The leaves are easily plucked off the stem, or you can hang upside down out of the sun to dry.

Written by Jenny Carden-Porrett, MNIMH.