Mushroom Growing Products

Global Innovator for Commercial Mushroom Growers

Amycel and Spawn Mate is a family-owned business that has been in operation since 1979, and we produce spawn and supplements for commercial growers like you. 


Our production and management offices and mushroom research and testing facility are located in North America, but we ship premium mushroom spawn and nutritional supplement products worldwide to 37 countries on 5 continents. In fact, we sell three million bags of spawn each year! 


As the leading innovator of mushroom strains, spawn products, and nutritional supplements in the United States, Amycel became the first spawn company to successfully introduce new brown mushroom strains to the industry. Today, more than 90% of Brown mushrooms connect back to us. Spawn Mate has led the field for 35 years with its invention of a delayed-release mushroom supplement. 


Unlike other mushroom spawn companies, we are the only vertically-integrated spawn producer in North America partnered with commercial mushroom farms across the continent.


We are growers too. Let us help you grow your mushroom farm.

Global Innovator for Commercial Mushroom Growers

Amycel and Spawn Mate is a family-owned business that has been in operation since 1979, and we produce spawn and supplements for commercial growers like you. 


Our production and management offices and mushroom research and testing facility are located in North America, but we ship premium mushroom spawn and nutritional supplement products worldwide to 37 countries on 5 continents. In fact, we sell three million bags of spawn each year! 


As the leading innovator of mushroom strains, spawn products, and nutritional supplements in the United States, Amycel became the first spawn company to successfully introduce new brown mushroom strains to the industry. Today, more than 90% of Brown mushrooms connect back to us. Spawn Mate has led the field for 35 years with its invention of a delayed-release mushroom supplement. 


Unlike other mushroom spawn companies, we are the only vertically-integrated spawn producer in North America partnered with commercial mushroom farms across the continent.


We are growers too. Let us help you grow your mushroom farm.

Collage of brown mushrooms growing

Our Promises to You

Amycel and Spawn Mate teammates will always go the extra mile for you. We promise to deliver high-performing mushroom-growing supplies with best-in-class customer service. Our customers can count on consistent and high-yield products delivered as promised and on time. We happily provide technical service, growing advice, and assistance for our customers including complimentary disease testing, compost analysis, and troubleshooting other growth issues.

tray holding white and brown mushrooms on wooden table

Spawn and Supplements You Can Trust

Quality and reliability are the cornerstones of our mushroom-growing supply business, and we take the utmost care in delivering consistent products day in and day out. Our mission is straightforward — to be the number one innovator and producer of premium mushroom spawn and nutritional supplements worldwide with products that define premium standards for the commercial mushroom farm industry. 

 

With the most proficient technical, production, and support staff in the industry, we work every day to earn and maintain our customers’ confidence in us.

Spawn and Supplements You Can Trust

Quality and reliability are the cornerstones of our mushroom-growing supply business, and we take the utmost care in delivering consistent products day in and day out. Our mission is straightforward — to be the number one innovator and producer of premium mushroom spawn and nutritional supplements worldwide with products that define premium standards for the commercial mushroom farm industry. 

 

With the most proficient technical, production, and support staff in the industry, we work every day to earn and maintain our customers’ confidence in us.

Ask Us Which Products Will Improve Your Mushroom Crop

As we approach our 45th anniversary, we are more committed than ever to our vision:

To transform the mushroom industry through the development of innovative spawn and supplement products.
Contact us today to learn how we can help you grow mushrooms and transform your business.
two mushrooms
Sign at the road leading to Amycel and Spawn Mate's production facility

Our Mission

Our mission is to be the number one innovator and producer of premium mushroom spawn and nutritional supplement products worldwide. Quality and reliability are the cornerstones of our business, and we take the utmost care in delivering consistent products day in and day out.

Communication is the key to customer satisfaction, and Amycel and Spawn Mate strive to have the most proficient technical staff in the industry.

Our History

From our humble beginnings in 1971 when Monterey Mushrooms was first established, we have witnessed and participated in the growth of the commercial mushroom growing industry.

In 1975, Monterey Mushrooms was purchased by Amfac, and only four years later, Amfac formed a subsidiary — Amycel — to produce spawn for commercial sale. Within the same year, Amycel constructed a mushroom spawn plant in California. 

Since 1979, Monterey Mushrooms and Amycel have grown exponentially. Some of our biggest achievements include the purchase of Spawn Mate, a premium mushroom nutritional supplement company, and the addition of a mushroom research and development laboratory in 1983.

Today, Monterey Mushrooms produces 200 million pounds of fresh mushrooms annually, and Amycel and Spawn Mate sell spawn and nutritional supplements to 37 countries on five different continents!
Collage of the original Amycel production barn, two mushrooms, and a scientist peering into a microscope
Warehouse working loading incubated spawn ready for shipment

Amycel and Spawn Mate Milestones

Global Expansion
Starting in the late 1980s, Amycel and Spawn Mate began expanding worldwide, purchasing additional spawn and supplement plants and establishing sales and distribution offices worldwide.

In addition to the United States production facilities, plants are now located in both Canada and Europe. Sales and distribution have also gone global with offices in England, France, Ireland, Italy, Mexico, and the Netherlands.

Global Leaders
In 2007, Spawn Mate became the leading organic supplement company in the world with the release of PG Natural. And in 2017, Amycel began implementing near-infrared (NIR) technology to analyze compost quality as a service to its customers.

Researcher wearing protective gear is checking mushroom spawn stored long term in Liquid Nitrogen

Amycel and Spawn Mate Milestones

Global Expansion
Starting in the late 1980s, Amycel and Spawn Mate began expanding worldwide, purchasing additional spawn and supplement plants and establishing sales and distribution offices worldwide.

 

In addition to the United States production facilities, plants are now located in both Canada and Europe. Sales and distribution have also gone global with offices in England, France, Ireland, Italy, Mexico, and the Netherlands.

 

Global Leaders
In 2007, Spawn Mate became the leading organic supplement company in the world with the release of PG Natural. And in 2017, Amycel began implementing near-infrared (NIR) technology to analyze compost quality as a service to its customers.

Development and Patent of New Spawn Strains

With a commitment to be the number one innovator and producer of premium mushroom spawn and nutritional supplement products worldwide, Amycel has invested significantly in research and development. The results are staggering with six new strains introduced so far.


Off-white Mushroom Strains
1. Delta, an off-white hybrid mushroom was released in 2003.
2. XXX, a vigorous off-white hybrid mushroom, was released in 2007.
3. Phoenix, a premium off-white hybrid mushroom, was released in 2008.
4. Exxcalibur, a premium off-white hybrid mushroom, was released in 2023.

Brown Mushroom Strains
1. Brawn, a hybrid brown spawn strain, was released in 2005. It is now patented in the United States, Australia, Mexico, New Zealand, Europe, and Canada.
2. Heirloom, a hybrid brown spawn strain, was released in 2005. It is now patented in the United States, Australia, Mexico, New Zealand, Europe, and Canada.

Development and Patent of New Spawn Strains

With a commitment to be the number one innovator and producer of premium mushroom spawn and nutritional supplement products worldwide, Amycel has invested significantly in research and development. The results are staggering with six new strains introduced so far.


Off-white Mushroom Strains
1. Delta, an off-white hybrid mushroom was released in 2003.
2. XXX, a vigorous off-white hybrid mushroom, was released in 2007.
3. Phoenix, a premium off-white hybrid mushroom, was released in 2008.
4. Exxcalibur, a premium off-white hybrid mushroom, was released in 2023.

Brown Mushroom Strains
1. Brawn, a hybrid brown spawn strain, was released in 2005. It is now patented in the United States, Australia, Mexico, New Zealand, Europe, and Canada.
2. Heirloom, a hybrid brown spawn strain, was released in 2005. It is now patented in the United States, Australia, Mexico, New Zealand, Europe, and Canada.

From Our History to Your Success

We started as growers just like you. Today, we support commercial mushroom growers around the world as they build profitable businesses.

Contact us to learn how we can help you grow mushrooms, transform your business, and create your own history of success.