Japanese Knotweed Powder

(1 customer review)


Sorry, all of our knotweed root is out-of-stock until the fall harvest in October.

Japanese Knotweed is the primary botanical used in the treatment of Lyme Disease, based on the herbal treatment protocols of Stephen Buhner. We harvest our wild Ontario Knotweed root in the early spring and late fall, when the root is at its most potent. Our Knotweed powder is milled finely, ready to be mixed into smoothies or other drinks.

We also sell chopped knotweed, as well as a tea cut, for those people who like to steep their knotweed.

Check out our blog post about harvesting knotweed.


This is dried, powdered, Japanese Knotweed root (Polygonum cuspidatum), harvested wild in Eastern Ontario in 2022.

We harvest in the spring and in late fall, when the root is at its most potent. Then we wash all of our roots by hand, and dry them conscientiously. When it comes to grinding our knotweed powder, we do it in small batches to keep temperature down and preserve the potency of this powerful herb.

You’ll know it when you see it. We care about the quality of the herbs we harvest, and we want you to have the medicinal herbs that you need.

Japanese Knotweed Root is the primary botanical used in several protocols for treating Lyme Disease, including Stephen Buhner’s program. Many Lyme sufferers opt for Knotweed powder over dried, cut-and-sifted Knotweed root, taking the whole powdered herb in a smoothie or other drink. You can read much more about dosage and the stories of other people with Lyme disease at buhnerhealinglyme.com

Japanese knotweed root is part of the traditional East Asian pharmacopeia. It’s most commonly known as Hu Zhang and Itadori, and is used to “excrete dampness and remove jaundice, clear heat and remove toxicity, resolve blood stasis and stop pain, resolve phlegm and relieve cough.” (https://tcmwiki.com/wiki/hu-zhang) It’s also been shown to have high concentrations of resveratrol, the compound that has made red wine’s health effects so famous.

All of our Knotweed root is harvested wild on private land that we are certain is free from contamination and biocide spraying.

We’ll fill bulk orders when we can. We’re more likely to be able to fill a big order if you contact us in early spring or September.

Additional information

Weight N/A
Dimensions N/A

2oz/60g, 4oz/115g, 8oz/230g, 1lb/455g, 2.5lbs/1.135kg

1 review for Japanese Knotweed Powder

  1. [email protected]

    I’d used other knotweed powder and this one is the best! It looks good – finely powdered, smell and taste fresh. I just put a small amount in my smoothies and can feel the difference in a few days. Will definitely order again when supply is low.

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