osadha natural health, llc

Herbalism, medicinal mushrooms, foraging 

Anna marija helt, Ph.D 


practicing since 2009

~HERBALISM In durango or wherever you are~


About Marija

Marija grew up running wild in the woods. (Well, at least ’til sunset.)  She’s a research scientist-turned-clinical herbalist, practicing since 2009.  Marija studied botanical medicine with Pam Fisher at the Berkeley Herbal Center (formally the Ohlone Center of Herbal Studies), with Kathi Keville at the Green Medicine Herb School, and for shorter stints with other herbalists. … (read more)

Book an Herbal Consultation to:

  • Work on optimal health and wellness through a simple, personalized approach that’s doable and doesn’t break the bank.
  • Work with an experienced herbalist with over 12 years in clinical practice and another dozen years of experience in biomedical research.
  • Become acquainted with the “plant allies” and foods that best fit you.


Durango Online Herbarium is up & contains 60+ fungal species. Plants are next...

I’m uploading over a decade’s worth of wild plant and mushroom photos, along with where they’re found and some additional basic info. I’ve started with fungi, and next will be plants. For now, entries are arranged alphabetically. Keep checking back to see the new uploads. You can use the search feature in the upper right corner to look for specific mushrooms or plants.  Note that many of the mushrooms and plants featured are not edible or medicinal so don’t assume you can stick ’em in your mouth just because they’re included in the herbarium.

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Upcoming Classes 

Click HERE for more info or to register.

FREE HERBAL MYCOLOGY MUSHROOM MASTERCLASS PANEL Live Zoom Discussion. Tuesday May 21st, 10am Mountain Time.  

POISONOUS MUSHROOMS OF THE ROCKIES Live Zoom Class. Wednesday June 26th, 2024, 7-830PM Mountain Time.

SUMMER FORAGING CLASS Saturday July 20, 2024, 930-11am in Durango.

WILD MUSHROOM WEEKEND Workshop Saturday August 3rd, 9am-3pm in Durango. Free mushroom walk Sunday August 4th, 9am-1130am for workshop attendees. 



14th Annual Good Medicine Confluence

GMC returns to Durango this year!  July 10th – 13th, 2024, at Fort Lewis College. The most vibrant, informative, and soul inspiring botanical conference I’ve been to. I’m teaching “Mushrooms for Gut Health” and “Beyond mushroom polysaccharides: A dive into the other magnificent medicinal mushroom molecules”  I have a couple/few discounted tickets available, otherwise you can purchase tickets here:  https://www.eventbrite.com/e/good-medicine-confluence-2024-tickets-729029766657?aff=oddtdtcreator


Want to learn about wild foods & medicines?

Sign up for 1-on-1 lessons whether you live in Durango, Dallas, or Delaware!  Check for upcoming classes and workshops that are in person or live-streamed.  Dive into 12 years worth of free articles and videos on herbalism, “mushroomism” and botanical aromatics.

Articles & Videos

On Cannabis Endophytes: An answer to a question

Originally published in Plant Healer Quarterly, Vol. IX, Edition IV (Winter 2019/2020) During my 2019 class at the Confluence on the endophytes of medicinal plants, someone asked if Cannabis has endophytes, and whether I would speak on the topic. They were curious,...

Kiabab Slippery Jacks growing in town!

All images (c) Anna Marija Helt/Osadha Natural Health, LLC. Not to reproduced without written permission.   Looks like mushroom season is happening after all, despite a dry fall/winter/spring. Thank you, monsoons! These are Suillus kiababensis growing under...

Monday’s Mushroom, Episode 14: Making spore prints

Easy and fun to do, mushroom spore printing is also an important step in mushroom identification. Spore prints are when you collect spores en masse from the mushroom cap. By doing that, you can see spore color, which would otherwise be impossible without a microscope....