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.


I have a few discounted tickets available for the 2023 Good Medicine Confluence

The 2023 Good Medicine Confluence is July 19-22nd at Lake George Colorado. I have four tickets available at 1/3rd off current price.  Come join us the best botanical gathering there is.  I’m teaching 3 classes:

Mushroom Microscopy: Taking a Closer Look

How to Critically Evaluate and Translate Botanical Research

Crazy about Conks: Four types of prep and what to do with them


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.

Please contact me if you’d like to receive monthly class notifications.


Upcoming Classes 

Click HERE for more info or to register.


TINCTURE MAKING WORKSHOP  In Durango. Sunday May 21st, 11am-12pm.           

PLANT & MUSHROOM WALKS June 17th at La Plata Canyon. July 15th at Engineer/Pass Creek. July 23rd at Upper Elbert Creek. August 19th at Andrew’s Lake. September 12th at Junction Creek.  Don’t wait to register, groups are limited in size.     

NATURAL PERFUMERY Workshop in Albuquerque. Saturday September 9, 2023, 10am-1pm.                                                              

ELEVEN CLASS RECORDINGS FROM 2022 ARE NOW AVAILABLE ON THE CLASSES PAGE.  Miss a class that you wanted to join last year?


2023 Herb & Mushroom Walks!!!!

I have 5 plant and mushroom walks scheduled. Please visit classes page for more info!


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.


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Articles & Videos

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....