Hernshaw Farms

Twenty Huge Wholesale Mushroom Grow Kits

$159.00

Quantity

🌱 Up Your Farm Game with Hernshaw Farms’ Wholesale Mushroom Blocks

Looking to scale up your operation with high-yielding, low-hassle mushroom blocks? Our 8–9 lb fully or three-quarter colonized grow kits are designed to produce big flushes and even bigger profits. Whether you're a beginner or a seasoned grower, we’re here to help you succeed — every order comes with free farm consulting.

🍄 What You’re Getting

8–9 lb mushroom blocks, partially to fully colonized
Hand-crafted with local sawdust, grain, soybean hulls, and love
Grown inside the historic Memorial Tunnel in West Virginia
Ready to fruit — just cut, mist, and grow
Yields: 1–3 lbs of fresh mushrooms across 2–3 flushes
Shelf life: Store near freezing (except Pink Oyster) until use

📦 Shipping Info

FREE USPS shipping to the East Coast & Midwest
Need a specific species or larger volume?
Email: support@hernshawfarms.com
Call/Text: 304-513-8003 (Mon–Sat, 7am–6pm EST)

🧊 Important Shipping Notes

Mushroom blocks are alive and temperature sensitive.
Let your local post office know you're expecting live blocks — many farmers arrange pickup or even get temperature logs!
We chill blocks before shipment to help them withstand transit.
On arrival, massage together any separated mycelium, and store in a 70°F room to recover — or refrigerate (except Pink Oysters) if you’re not fruiting them right away.

💸 Bulk & Freight Discounts

Ordering 200+ blocks? Let’s talk freight!
We offer deep discounts and smarter shipping options when you buy in volume. Many growers build walk-in coolers using AC units and CoolBots — we’ll help you plan and price this out for maximum profit and minimal waste.

✅ Our Guarantee

Replacements offered via USPS if anything arrives in poor condition
Just email a group photo to support@hernshawfarms.com
Due to deep wholesale pricing, no refunds are offered

💬 Have Questions?

Call us anytime between 7am–6pm EST at 304-303-5514
Or email: support@hernshawfarms.com

Let’s get your farm growing faster and smarter. We’re here to help every step of the way.

Perfect i can’t wait to te order again so far so good

10 block beginner wholesale blocks

biggest blocks I have seen , they came a little sporadicly but when they all got here great! They are not fully colonized/ready to fruit, but I have time, we are in the middle of a deep freeze,and the seem to be fine . Non have popped out but I am very hopeful I will be fully impressed and will order again .
1/2 of the order gal water jug for reference

Excellent

This was our second order and it was even better than the first!
Great job everybody at Hernshaw.
Nice to know that we’re supporting reclamation of coal mine land too.

Never received

Says you made a label but never shipped the product

Great Customer Service - Fast Shipping

Blocks came in quick and neat - Customer service was more than happy to help when I reached out :)

1 2

These are the star of the order , great flavor and prolific producer

Only 1 of the 4 produced mushrooms before green mold formed . The one thst produced mushrooms is still going strong. All the others had yo be discarded so thry did not spread the mold to the othrrs . ( grown in 4 tier mushroom grow chamber )

My mom loved this kit so much!

My mom told me this one of the best presents she's ever received. She was so excited to check on it every day and see the growth. She got several harvests from it and says the mushrooms are delicious too. The only issue is that the instructions had suffered from some sort of printing error and some key instructions were missing as a result. But we figured it out!

Great value

I'm pretty new to mushroom growing, but I'm learning fast. I've bought two grow blocks previously from other suppliers. Both were fine, but only yielded about half a pound of mushrooms (so far, both are on their third flush now). They turned out to only be 2 pound blocks, and at the time I did not know that the maximum yield you can expect from a 2 pound block (at least for lion's mane and blue oyster) is about half the block weight, or 1 pound. It looks like I'll probably land at about 3/4 pound, and those early blocks were definitely not kept at ideal conditions so that's about as much as I could have hoped for.

Still, getting flushes that were only 2-4 ounces was disappointing to me at the time since that's only a few mouthfuls for my wife and myself!

When I found out that hernshaw farms was offering 8 pound blocks, and now knowing the math (that at ideal conditions I could expect 2 to 4 pounds over the course of all the flushes) I was entrigued. When they recently had a 20% off sale, making their "four fun guys" package a mere $16 a block (with free shipping!) I just had to bite.

I had been developing a Maker project, a mycology growing chamber with automated humidity, temperature, co2, and light level. My prior chambers had been 1 square foot. i realized I needed to build a new supersized chamber to hold 4 8-pound blocks blocks. So I ordered 1mm thick PETG sheets 2 feet by 3 feet and constructed a chamber 2 feet wide, 18 inches deep, and 12 inches tall. I doubled the humidifier output and built new LED lights to cover the entire area, then adjusted my PID algorithms to be more suitable to a larger chamber.

Well, the four blocks were even huger than I had estimated and fit in the chamber with just enough room for all the sensor units and actuator units! This was a pleasant surprise! It took several days to get the algorithms tuned to the much larger growspace, and I am still having trouble keeping the CO2 levels under 800 (recommended max for oysters is 750). I've got a larger fan on order to address this.

The blocks were in rough shape from the shipping, with large fissures in two of them. I saw some blue patches on one of the blocks, which I was initially afraid of contam, but I also knew it could just be bruising. I let all the blocks rest in the dark for 3 days to let them recover from shipping. (I was still adjusting my chamber anyway). The blue areas were engulfed by white mycelium and disappeared. All good!

After deploying the blocks in the supersized chamber, two of them started fruiting within just a few days (chocolate oyster and blue oyster). Four days later (today) the chocolate oysters look about ready to harvest and the flush is gigantic compared to what I was getting from my old 2 pound blocks. I haven't harvested yet but I'm estimating 3/4 pound right now. The blues look like they'll be ready in a few more days.

A third block, labelled "golden oyster" just started fruiting today. Surprise! It appears to me that this is really Lions Mane (I see the little white cauliflower-like heads forming quite clearly). I would have taken a star off my rating from having a block mislabeled, but since I really wanted a lion's mane anyway, I will not! This would have really confused a completely beginner though, so I would urge hernshaw farms to be more careful in their labelling.

The fourth block, labeled snow oyster, has still not fruited, although I think I see little tiny primoridia forming now. This block has really thick white "skin", which I think I have seen some people refer to as "overgrowth". I few days ago I ran a razor blade over the exposed area to break this up, and I think that stimulated the pinning. I will keep an eye on this block.

Needless to say, I am thrilled by this deal. $16 with free shipping for a block that could yield 3 to 4 pounds of mushrooms (in my area the economic value of gourmet mushrooms is about $20 a pound). Versus the other blocks (one from Amazon, one from Etsy) that were 2 pound blocks for $25 with an additional $8 for shipping for a total of $33 that will only yield probably 3/4 pound when all the flushes are done. So the score is:
Hernshaw 4 fun guys on sale: $16 total cost (per block) for at least $60 worth of mushrooms. ROI: 375%
Amazon/Etsy blocks: $33 total cost for a block for only about $15 economic value of mushrooms. ROI: 45%

Of course the biggest advantage is, I'm getting flushes that will make a hearty side dish instead of a few mouthfuls.

Bottom line: the quality of this offering is fabulous. Even when not on sale, the value is tremendous, but if you can pick up four fun guys on sale it's beyond amazing compared to other vendors. Blows the competition (at least the two I tried) away.