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About Grower's Secret

Grower’s Secret History

The Grower’s Secret Story began in 1995 on a mushroom farm on Maui with a phone call that started a collaboration between two long time friends, lab partners and plant pathologists, Bryan Hiromoto and Wesley Chun, both have degrees in plant pathology from U of Hawaii.  Together, they identified several species of edible mushrooms that produced nematicidal compounds.  One mushroom was found to produce a compound that significantly stimulates plant growth.  In 1998, Advanced Biological Research, LLC (ABR better known as Albert Pleus, Bryan Hiromoto, Randy Harve) was formed and the process to produce large quantities of this compound in a liquid fermentation culture was developed.  Field validation was conducted in Hawaii and by third party researchers with the support of a federal grant.  By 2003, large bioreactor incubation was established and the growth enhancer was sold commercially as Liquid Compost Factor and in retail stores such as Ace Hardware, KMart, and Long's Drugs as PGE.  

In 2010, Chaz Berman agreed to commercialize the material and ABR became Grower’s Secret, Inc.  The plant growth enhancer was rebranded as Grower’s Secret Professional (GSP), marketing efforts were expanded, and the company explored expanding the product line.  After enhancing fish emulsion with GSP, the company has added several organic fertilizers and supplements to its product line.  In 2014, we added an organic, high nitrogen fertilizer derived from soy beans called Grower’s Secret Nitrogen 14-0-0 to our family.  

Today, we offer 17 products, all designed to do good for farmers and the earth.  And we are always looking to follow in our founder's footsteps to conceive, design and produce Innovative Organic Solutions so farmers have more choices to grow sustainably with little risk.

Learn more about Grower's Secret's innovative products and how they support more resilient crops.


As B Corporation followers and leaders of this emerging economy, we believe:

  • That we must be the change we seed in the world.
  • That all business ought to be conducted as if people and place mattered.
  • That, through their products, practices and profits, businesses should aspire to do no harm and benefit all.
  • To do so requires that we act with the understanding that we are each dependent upon another and thus responsible for each other and future generations.


What is a B Corporation?

GSI follows B-corp Princiapals: Seeks to benefit all stakeholders.

“We envision a global economy that uses business as a force for good."

This economy is comprised of a new type of corporation - the B Corporation - Which is purpose-driven and creates benefit for all stakeholders, including shareholders, employees, our community and the environment.


Grower's Secret Values

We believe companies, like individuals, need to be environmentally and socially responsible citizens. We are committed to using organic, renewable and sustainable ingredients in our products and packaging as we grow our business; and to operate our business in a way that is in harmony with nature, preserves natural resources, and makes a healthier world for future generations. We believe that farmers are heroes.

We adhere to B Corp standards of openess, transparency and care for all of our stakeholders.
We strive to have our business practices be honest, fair and authentic.
Our employees bring a high level of experience, knowledge and skills.
We have demonstrated over time we produce more profit for our farmers and keep their farms and businesses safe.

Facts About Grower's Secret

Did you know that Grower's Secret was founded in 1998 on the island of Maui?

26 Years young!
4 Locations: Antioch CA, Kent WA, Tampa FL, Honolulu HI
17 Employees, Contractors, Advisers, and Board
1 Patent
about-us-employees-family-banner-4B-June 2020