Grower's Secret

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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, Bryan Hiromoto and Wesley Chun.  Together, they identified several species of edible mushroom that produced nematicidal compounds.  One mushroom was soon 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 their product line.  In 2014, we added an organic, high nitrogen fertilizer derived from soy beans called Grower’s Secret Nitrogen 13-0-0 to our family.  

By 2015, GSI added Earth Emulsion 2-3-3.  Today, we offer 4 products, all designed to sustainably increase agricultural productivity.  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.

HQConcord, CA, US
Employee Ratings3.8

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Employees (est.) (Jun 2020)13
Cybersecurity ratingAMore

Key People/Management at Grower's Secret

Charles Berman

Charles Berman


Grower's Secret Office Locations

Grower's Secret has offices in Concord and Honolulu
Concord, CA, US (HQ)
5143 Port Chicago Hwy suite a
Honolulu, HI, US
1541 S Beretania St #101
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Grower's Secret Financials and Metrics

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Founding Date


Grower's Secret total Funding

$9.6 m

Grower's Secret latest funding size

$8 m

Time since last funding

7 years ago
Grower's Secret's latest funding round in June 2014 was reported to be $8 m. In total, Grower's Secret has raised $9.6 m
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Grower's Secret Cybersecurity Score

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Grower's Secret Online and Social Media Presence

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Grower's Secret Blogs

Ferti Facts: Seeds of Change

Seeds of Change: What’s in your Packet of Certified organic seed? By Dr. Wesley Chun Ph.D., Grower's Secret, Chief Science Officer

Organic Versus Conventional Foods: Fifty Shades of Green

Organic Versus Conventional Foods: Fifty Shades of GreenBy Dr. Wesley Chun Ph.D., Grower's Secret, Chief Science OfficerIntroduction Organically produced food is an essential form of food production that has existed since the dawn of agriculture. It resided with the Green Revolution but has regai…

Micro-Nutrients 2020

The 2020 growing season is upon us. It is time to think about crop fertility and micro-nutrients. The lack of micro-nutrients may affect your production and/or quality.

A GoFundMe to Help our Front-Line Ag Workers During the Pandemic

Grower’s Secret  is concerned about our front-line heroes, our farmers, anyone working in Ag that gets crops and/or food onto the tables of all California residents, families and citizens. Our farmers and growers are essential to the survival of all Californians. They provide every food you eat to…

Pre-Plant and At Planting Fertilizing

By Dr. Wes Chun Ph.D. Grower's Secret, Chief Science Officer Applying fertilizers pre-plant and at-planting are beneficial practices to restore soil fertility and grow a successful crop.  Pre-plant fertilizers are applied before planting seeds or seedlings into the field or into nursery…

Post-Harvest Fertilization of Tree Crops

By Dr. Wes Chun Ph.D. Grower's Secret, Chief Science Officer For many crops, post-harvest (the period after harvest and before leaf senescence) fertilization can play an important role in the following season crop. In many tree crops, it is one of the best times of the season for uptake…
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Grower's Secret Frequently Asked Questions

  • When was Grower's Secret founded?

    Grower's Secret was founded in 1998.

  • Who are Grower's Secret key executives?

    Grower's Secret's key executives are Charles Berman.

  • How many employees does Grower's Secret have?

    Grower's Secret has 13 employees.

  • Who are Grower's Secret competitors?

    Competitors of Grower's Secret include Rootility, Tropical Melhoramento & Genetica and Enko Chem.

  • Where is Grower's Secret headquarters?

    Grower's Secret headquarters is located at 5143 Port Chicago Hwy suite a, Concord.

  • Where are Grower's Secret offices?

    Grower's Secret has offices in Concord and Honolulu.

  • How many offices does Grower's Secret have?

    Grower's Secret has 2 offices.