Organic Blue Oyster ‘Spray & Grow’ Mushroom Growing Kit

$29.99

Grow mushrooms straight from the box!

Our beginner-friendly Certified Organic mushroom spray and grow kits make growing your own mushrooms easy. Every box is 100% Guaranteed

As Easy as 1-2-3

1. Open - Remove the perforated front panel

2. Spray - Spritz daily with the included mister

3. Harvest - Fresh mushrooms in as little as 7 days

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In Stock. Ships in 2-5 business days.

USDA Certified Organic

USDA Certified Organic

Trusted by 350K+ Growers

Trusted by 350K+ Growers

Money Back Guarantee

Money Back Guarantee

Embark on a rewarding culinary adventure with the Organic Blue Oyster ‘Spray & Grow’ Mushroom Growing Kit from North Spore. This acclaimed mushroom grow kit provides an accessible entry point into home cultivation, allowing anyone to harvest gourmet, organic blue oyster mushrooms directly from their kitchen counter.

Engineered for unparalleled ease, this indoor-only kit is ideal for beginners and seasoned mycophiles alike. Simply unbox, mist with water as directed, and observe the rapid development of vibrant blue oyster clusters. Minimal effort yields impressive results, making mushroom cultivation a delightful daily activity.

Blue Oyster mushrooms are celebrated for their distinctive savory flavor and tender, meaty texture. Harvest fresh and incorporate them into a diverse array of dishes, from stir-fries and pasta to savory sautés, enhancing both taste and nutritional value with locally grown produce.

Each North Spore Spray & Grow kit is meticulously prepared to ensure optimal growth and multiple flushes of high-quality, organic fungi. This comprehensive setup requires no specialized equipment, providing a self-contained ecosystem for consistent mushroom production.

For detailed instructions on setup, care, and harvesting techniques to maximize your yield, please refer to the complete guide provided with your kit and available on the product resources section of our website.

What's Included

Each Kit Includes:

  • 1x Spray & Grow Box
  • 1x Spray Bottle
  • Detailed Instructions
Specifications

Shelf Life: 6 months (refrigerated)
Kit dimensions: 10"(H) x 5"(W) x 5"(D)
Kit weight: 4 lbs

Instruction Booklet (included in Kit)

Using a Spray and Grow Kit

Product Details

Why We Love Them:

Blue oyster mushrooms are velvety, savory, and mild and pair perfectly with just about any recipe! Blue oysters are a staple here at North Spore (going all the way back to when we began as an urban farm.) After perfecting our blue oyster kits over the years, they’ve become one of the easiest kits to get multiple fruitings from and should produce a second flush of mushrooms (or more!)

100% Guaranteed.

Our blue oyster mushroom kits are reliable producers and tend to yield large flushes of beautiful light grayish-brown to deep blue-gray mushrooms when given adequate humidity. With continued proper care, you should be able to get multiple flushes. We 100% guarantee your first flush of mushrooms, but hope you'll try for 2 or 3!

It's Mycelium!

Your kit includes an amended sawdust block fully colonized with mushroom mycelium. It may appear covered with a soft, white substance - that's the mushroom mycelium! It is completely normal and means your kit is packed with fungi ready to fruit. The mycelium of some species is more prominent than others.

Upgrade Your Grow
Organic Lion\'s Mane Mushroom Tincture
Organic Lion's Mane Mushroom Tincture (+$29.99)
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Wine Cap Garden Bed Kit (+$44.99)

Try growing outdoors

Functional-5 Mushroom Coffee
Functional-5 Mushroom Coffee (+$17.99)

Frequently Asked Questions

Inside your Spray & Grow Kit is a living organism, so we recommend activating it upon receipt. If you need to wait, they can be refrigerated for up to 6 months. 

It's important to get the area where you cut open the bag nice and damp! Try 5-10 sprays each time. If the surface of the block seems very dry the next time you spray it, you should give it a bit more water or water a bit more often. If you run AC or live in an arid climate, using a humidity tent can be useful to prevent your block from drying out.

We guarantee at least one fruiting of mushrooms off your kit, but it is possible to have multiple fruitings with care and patience. In terms of yield, you can usually expect your first flush to be somewhere in the range of 1/2 of a pound to 2 lbs. Each subsequent fruiting will likely be smaller as the fungi use up nutrients in the substrate.

The word fruit can be very specific, referring to foods like berries and apples, or a bit more general to refer to how an organism reproduces. So tomatoes and rosehips are the fruits of those plants; they contain the seeds. Mushrooms are the fruits of a fungus; they contain spores. So when a fungus starts to produce mushrooms, we call that fruiting.

Hold the cluster near the base and spin them. If you'd rather use a knife and cut them, that's fine too! Clean off any loose bits from the kit before continuing to spray and cut off any bits of sawdust from the block on your mushrooms before cooking and eating them.

After removing the front panel of the box along the perforated lines, cut an X into the exposed plastic. Remember to leave the plastic flaps of the X on the bag, they'll help to keep moisture in. The mushrooms will easily grow out of the sliced X section, so no need to open it up more as they fruit.

Absolutely! Mushroom cultivation is a great activity to do with the whole family, whether you'd like to grow indoors or outdoors. If you're new to mushrooms, we recommend starting with a Spray & Grow Kit or a Plant & Grow Kit – both make it easy to grow fresh, organic mushrooms at home.

We want you to have the best possible experience with every North Spore product and guarantee free replacements within 30 days of receipt for any damaged, contaminated, or unusable product.

We recommend absolute beginners start with our Spray & Grow Kits, which make growing mushrooms at home super easy.

Cluster of brown-capped mushrooms with long, light-colored stems against a white background.

Fresh Mushrooms at Home, Fast

Spray & Grow kits bring the magic of mushroom cultivation to your countertop. In as little as two weeks, you’ll be harvesting gourmet mushrooms right at home—no special equipment needed.

Backed by Our 100% Grow Guarantee

Every kit comes with our 100% Guarantee: You’ll get your first flush of mushrooms, or we’ll make it right. With over 350,000 happy growers, North Spore is trusted by hobbyists, chefs, and mycologists alike.

Reviews

  • 5 stars: 221 (93%)
  • 4 stars: 12 (5%)
  • 3 stars: 0 (0%)
  • 2 stars: 2 (1%)
  • 1 star: 3 (1%)
P
Petra Tsuji
so much fun, and SO many mushrooms!!

I kept mine in the corner on the kitchen counter and sprayed them daily (sometimes twice a day). I wasn't quite sure just how much I needed to spray water, but clearly, the mushrooms thought it was just right! I just harvested the first ones today (probably could have harvested yesterday already) and they are delicious! :) Can't wait for the second box (yellow oyster) to reach harvest stage, probably next weekend. Now, let's see if the second flush is going to work as nicely. Fingers crossed

K
Kibria Berkley
So easy

I bought a couple spray and grow kits. I thought well they are worth a try. My husband and I eat mushrooms almost every single day and this was just to supplement that. After six days I could see little baby mushrooms growing. So satisfying and easy to grow. Thank you North Spore!

Your review made our day, Kibria! Please reach out if you ever need anything.

I
ILDIKO ORDOG
Love it

Very easy to grow mushrooms in this kit! Grow faster than I was expected.

Thanks for sharing the photo, Ildiko! We're so happy you're enjoying the experience.

C
Cyndi Johnson
The Easiest Way to Start Your Mushroom Addiction

The Spray & Grow kits are honestly the simplest and most fail-proof way to get started with growing your own mushrooms at home.
Once you see how easy it is, you will be hooked.
Sure, like growing any living thing, there are Do’s and Dont’s but the instructions are clear, the website has tons of information and the Customer Service can’t be beat.

Thanks for the great review, Cyndi! We really appreciate your support.

L
Lynn Nelson
Great

My overall experience as a beginner is working like clockwork. Absolutely good. No problems and so far great results. I will stay with them.

N
Nichelle
Great Experience!

I'm usually an ordinary gardener; this was my first foray into mushroom growing, and it couldn't have gone better! A few days of humidity and then these guys were sprouting so fast it freaked my husband out. I already have a boomr bin set ordered and I can't wait to get into it!

We're so happy to hear you're enjoying the experience, Nichelle! Thanks for the great review.

J
Jaden Larocca
Highly recommend!

This was my first time ever growing mushrooms or really anything and it could not have been easier and more beginner friendly. Very short grow time which made it exciting to keep up with the progress everyday. Instructions were very simple and clear and they grew great next to my sink. Definitely recommend as an introduction to mycology and made me start a little setup and got me into it.

A
Anna Phillips
Tasty mushrooms

These turned out great and were so easy to grow. I was even able to force a second flush and it is almost ready to harvest!

So glad to hear the blue oysters are growing well for you, Anna! Our team is here to help if you ever need anything.

J
Joseph
north spore......amazing job on your products

I love it!, I am a 10 year old boy who is obsessed with mushrooms,I got this product I believe 3-4 days ago the day I wrote this review,the mycelium is spreading quickly each day! cannot wait to eat some yummy blue oyster mushrooms!

Thanks for sharing, Joseph! We truly appreciate your support.

J
Jason Keene
Good stuff

Great mushrooms

J
Jason Keene
Very good mushrooms

These blue oyster mushrooms are the best. I love them.

T
Tamara

I love this company

We truly appreciate your support, Tamara!

P
Penny Ettinger
Nothing happened!

Not at all impressed. I followed the instructions and NOTHING!

A
Alex
Perfect for beginners

These mushrooms grow eagerly with little care and taste great

Thanks for the review, Alex! Blue Oysters are of our favorite species, too! Glad you’re enjoying them.

E
Em
Great for first-time growers

the kit was easy to set up and came with everything we needed, including detailed instructions. The block gave us 4+ decent flushes, and some smaller ones past that!

Thanks so much for the great review, Emily! So amazing to hear you had success with the kit!

D
David Buss
They are delicious

1st time using, very easy to to use, got 2 heads (whatever they are called haha) out of it, will be ordering more

Awesome, David! Thanks for taking the time to share your experience.

P
Peggy Twork
Slow Shroom

I’ve had to ask for advice after nothing in 3 weeks. I quickly got advice. So I cold shocked it and I wait. I really want to be successful this time, my second attempt. I’m thinking they would be a great Christmas presents if I can pull this off

Thanks for the review, Peggy! Hopefully your block starts producing, but please reach out with any questions along the way.

S
Sandra Kline
Mushrooms

I love mushrooms and the spray & grow kits are easy and handy.

We're so happy you're enjoying the experience, Sandra! Thanks for the great review.

R
Rafael P.
First Harvest

This is my first time growing mushrooms. I was amazed at how quickly they grew! I'm looking forward to cooking them up tonight!

Thanks for sharing, Rafael. Your grow looks amazing! We’re so glad everything is working out for you.

D
Dave
First flush outside!!!

Loved growing and eating these. Replanted outside and found my first flush this morning, just 4 weeks after planting. So excited!!!! More to come as I have planted yellow oyster, wine cap, and morels. Thank you Northspore

Your grow looks amazing, Dave! We’re so glad everything is working out for you. Please reach out if you ever need anything!

M
Michael Kaiser
Blue oyster

Kit was excellent!

Your grow looks amazing, Michael. Blue oysters are one of our favorite species. Thanks for sharing!

D
Dominique

Highly recommended

T
Tessa Stickel
Super Fruits!

I grew this in my classroom for my students to draw. It made them more curious about mushrooms and they were fascinated to watch them grow. Bonus gift was eating them after we had studied them!

Tessa, what an amazing learning tool! So cool to hear how our products are being used in the classroom. Thank you so much for sharing!

J
Jason Keene
Great stuff

Everything is awesome

Thanks for sharing, Jason!

J
Judy Bamford
Blue oyster

Love them ! Large full growth , have used in many
Dishes. I’m looking for a marinade recipe my Nonna use to make

Wow Judy, thanks for sharing your successful grow with us! We hope you enjoy these!

B
Bonnie Lepage
Mushrooms Are Growing!

I bought 4 blue oyster mushroom kits for Christmas presents .. one for my husband .. it has taken 2 weeks, but our mushrooms are growing like crazy now! So much fun to watch them grow every day! Looking forward to first harvest!

What a great gift idea, Bonnie! So glad to hear you are getting a great flush!

T
Terese Rachal
As advertised!

My blue oyster grow kit flushed beautifully. Is now bursting with second flush.
Has been a fun and delicious experience.

Wow Teresa! Keep up the beautiful flushes! Thank you so much for sharing your experience with us, we so appreciate it.

A
Ace Customer

They were delivered promptly and in good condition. Very happy with my purchase. Can't wait for my monotub to arrive on Monday!!!

We're so glad you're enjoying the experience, Debra!