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Mushroom Grow Bag

Organic Bulk Substrate
Casing Mix (5 lbs)

$2695

  • 🪄 For Dung-Loving Mushrooms
  • 🌱 Made With Organic Ingredients Only
  • 🚫 No Pesticides Or Synthetic Ingredients
  • 🤝 Guaranteed To Grow Mushrooms
  • ↪️ Free Replacement Bags
  • 😷 Medically Sterilized @ 250 °F / 15 psi
  • 💪 Thick 8 Micron Polypropylene Bag
  • 💨 .2 Micron Filter For Proper Air Exchange
  • 🧑‍🍳 Made With Coco Coir, Vermiculite, Gypsum
  • 📞 Support From Our Expert Mycologists
  • 🏋️ Extra Large 5 lb Bag
  • ❤️ Profits Support Groundbreaking Research
  • 🧤 Sterile Gloves & Swab Included
  • 🇺🇸 Made in the USA
  • 🧑‍🧑‍🧒‍🧒 Family Owned & Operated
  • 🎖️25% Off For Veterans & Military (email us)
(Buy More & Save)
$32

All orders ship next business day

All orders ship next business day

GUARANTEED TO GROW

If your bulk substrate doesn’t result in mushrooms, we’ll replace your bag or give you a full refund. Simple as that.

 

Organic Sterilized Mushroom Bulk Substrate Bag

Our 5-lb organic bulk substrate bag is a clean mushroom substrate made from CVG (coco coir, vermiculite, gypsum) and hydrated to field capacity – meaning it has the perfect amount of moisture for mycelium to thrive. Use it as a casing layer or mix it with grain spawn for monotubs, dubtubs, XLX bags, trays – or whatever you’re running at home. This bulk substrate keeps contamination low and yields high.

50 YEARS OF EXPERIENCE

We are a team of mycologists with over 50 years of combined experience growing mushrooms. Our goal in creating Magic Bag was to make the mushroom growing process easy, fun, and accessible while providing the highest yields possible.

WHY WE GIVE AWAY OUR PROFIT

When we started Magic Bag, we decided that making a beneficial impact was more important than profits and that the mushroom world was the wrong place for a profit-first mentality. We donate 100% of our profits to 501(c)(3) organizations doing groundbreaking research on the beneficial effects of certain mushroom species. Visit our Donation section to learn more and view our donation records.

NO CONTAMINATION

Contamination is the nemesis of mushroom cultivators. Our industry-leading medical grade sterilization process is key in reducing the chances of contamination in our bulk substrate bags. We use top-of-the-line, commercial steam sterilizing electric autoclaves set at 250 °F and 15 psi over a 2.5 hour sterilization period to ensure our bags are sterile and resilient to contamination.

EXPERT HELP

Magic Bag bulk substrate bags make it easy as pie to grow mushrooms, but if you need a little assistance, our expert mycologist is on hand to answer any questions. Shoot us an inquiry at [email protected] at anytime during your grow.

Where Does Your Money Go?

100% of profits from every Magic Bag sale are donated to leading 501(c)(3) non-profit organizations performing groundbreaking studies on the beneficial powers of certain mushroom species. Magic Bag is a registered California Benefit Corporation. If you have any questions regarding our philanthropic cause or want to help out in any other way, please reach out to us at .
100% of profits from every Magic Bag sale are donated to leading 501(c)(3) non-profit organizations performing groundbreaking studies on the beneficial powers of certain mushroom species. Magic Bag is a registered California Benefit Corporation. If you have any questions regarding our philanthropic cause or want to help out in any other way, please reach out to us at [email protected].

Our Guarantee

Your satisfaction is our concern. If there are any issues with your Magic Bag, let us know and we will send you another Magic Bag or offer you a full refund; whichever you prefer. Simply contact us at with your order number and we’ll take care of it.

Our Reviews

We know it’s hard to trust on-site reviews these days but we want to be absolutely clear that we never, ever, ever, post fake reviews. Every review on our website is from an actual customer. We occasionally offer discounts to customers who leave reviews in order to encourage feedback—but this applies to any review they leave, whether it is positive OR negative, and we always make this clear. We strive to offer the best products and customer experience—a huge part of that is hearing our customers’ honest feedback. 🙂  

*Please check out our Grow Guide for answers to frequently asked questions, instructional videos, and tips. If you can’t find an answer there, shoot us a message below. ❤️