06/10/2026
Chaga
It is the mushroom that we forage in winter. Preferably when it has been below 40 degrees for 5 days and the sap has moved back to the roots of the Birch tree.
Chaga mushroom (Inonotus obliquus) — the black, clinker-like fungus that grows on the trunks of white birch trees across the boreal forest — has been used as medicine in Russia, Scandinavia, and Siberia for at least 500 years. It is found on other birch trees here in PA.
And the reason it has been used — the scientific reason — is now understood.
Chaga parasitises the birch tree. As it penetrates the bark and draws nutrients from the host tree, it concentrates the birch triterpenes — including betulin and betulinic acid — from the bark into its own tissue. It then adds its own pharmacological compounds: inotodiol (another cytotoxic triterpene), ergosterol peroxide (an anti-cancer sterol), melanins (extraordinarily high antioxidant activity), and immunologically active beta-glucans.
The result: chaga is simultaneously a concentrated betulinic acid delivery vehicle AND a beta-glucan immune activator — combining the direct cancer cell targeting of betulinic acid with the NK cell and macrophage activation of the beta-glucan fraction.
The preparation: a proper chaga dual extract — hot water extraction (for beta-glucans) combined with alcohol extraction (for triterpenes) — is the most complete way to capture both pharmacological fractions.
The oxalate caution: Chaga contains very high oxalate concentrations. Individuals with kidney disease or a history of calcium oxalate kidney stones should avoid high-dose chaga use and consult their healthcare practitioner. For these individuals, birch bark extract directly is the preferred betulinic acid source.
It can be made into tea, or our preferred source of medicine is through dual extraction. Where you benefit medicine through alcohol and water extraction.
We forage substantially here in Pennsylvania. Chaga is available in our "Blend"
Sunny Horizon Farm tinctures are available Fox and Thistle Mercantile in Brookville
Sunrise Coffee Bar in Brockway and Coblentz Amish variety store.
You may email us with any questions.
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