January 1, 2015


High Mountain Compost – mushroom substrate, kits, kit refills, compost tea

Contact us anytime:  highmountain@olypen.com

Mobile Users:   See toggle switch at the bottom

of the page to switch to mobile friendly display!




highmouw_compost_bag-288x300 10lb filter patch bag of mushroom growing compost

We sell a rich, natural, manure based growing medium,   specifically formulated for growing exotic, gourmet and medicinal mushrooms.  It is odorless and easy to use. No casing is required.

It also performs well with any type of plant. Because it has been heat pasteurized, there are no harmful bugs, bacteria, fungus, spores, etc, which means you can use it  without worrying about contamination..

It is not the “mushroom compost” you can buy at a garden center, which has little or no mushroom nutrients and a generally high salt content.  It is not the “mushroom compost” you often see  advertised. That “compost” has already commercially produced 3 harvests and is considered ‘spent’.

Our compost, packaged in 10lb  filter patch bags, has been specifically formulated for dung-loving mushroom growth, and is by far the most nutrient rich substrate available. It will last for an indefinite amount of time as long as the bag is kept sealed and in a cool(50-55 deg), dark place, like a refrigerator.

Priced at $4.50 per pound, it is a bargain that will produce large yields of shrooms!
Join our mailing list for sales information and great promotional discounts!


We have a very large stock of compost available.  Buy Now!   Any size orders in 10 lb. increments are welcome!


Our mushroom growing kits and kit refills are simple and easy to use.
These kits come with full instructions, or you can read them here .

Buy Mushroom Growing Kits  Buy Now!


Questions?? Take a look at our FAQS page

Contact us at highmountain@olypen.com

Affiliates?  Click to see our affiliate program!

Interesting LINKS on other cool products you may be interested in.


Categories: .

Comment Feed

13 Responses

  1. Hi, it is $4.50/lb; we only sell in 10 lb bags, so $45.00/bag 🙂

  2. Jeffrey MeranJanuary 8, 2018 @ 3:05 am

    You have a typo here that days $4.50 per lb but its $45.00 when going to purchase

  3. yes, indefinitely. Bring to room temperature before you use it though 🙂

  4. matt thomasNovember 21, 2017 @ 3:18 am

    can you keep in the freezer

  5. Rick FosterOctober 19, 2017 @ 6:39 pm

    Please check out paul statesmem and johns Hopekins cancer treatmemt. Turkey tail mushrooms they grow ebery where

  6. Please look at our website, http://www.highmountaincompost.com
    Specifically at the page for High Mountain Gold. This compost is amazing in it’s ability to boost growth in plants.
    We use post office mail as our shipping carrier. Our order page is self-explanatory.
    Thank you, and wish you the best.

  7. chemobrainJuly 30, 2016 @ 12:42 am

    Diagnosed with fallopian cancer. Positive BRCA1 gene, 89% chance of breast cancer developing. I believe your compost will work well for my medicinal growing. If you please, may I have information in obtaining some. Thank you.

  8. Tom WolfJune 29, 2016 @ 6:24 pm

    I remember when HMC first started out and was absolutely amazed by the quality of their compost, and it has only gotten better and more refined over the years!

  9. I have had wonderful results with this substrate, and recommend to all of my like minded friends who sometimes do not have time to prepare their own.

  10. I love High Mountain compost, it works great for different plants as well. I had a few pounds extra and put it with some of my indoor strawberry plants, and they are loving it! Cheers Mate…

  11. sheldonJune 24, 2012 @ 11:49 am

    to Ryan, we are sympathetic to cluster headache sufferers, and have set up special discounts for patients when referred to us by Hawkseye. Please contact thru email.. highmountain@olypen.com

  12. ryan holyoakJune 20, 2012 @ 7:34 pm

    hello, my name is ryan, hawkeye gave me your # and said that you have the best compost for mushrooms, i am suffering from cluster headaches, and have heard that they mite help? im willing to try anything to not have that pain. how do i get some of your compost? and how much$? thanks

  13. justin kibbeNovember 30, -0001 @ 12:00 am

    I wish I’d found you sooner, I’m kinda skeptical of ANY new site nowadays, but from what I hear, I’d LOVE to try some of your compost

Some HTML is OK

or, reply to this post via trackback.