About Growcentia

Our Story

Growcentia was founded by a team of three Colorado State Universty soil microbiologists with PhD degrees that share a passion for enhancing soil health and promoting sustainable agriculture. Using innovative proprietary technology, this team developed an approach to identify and apply nature’s very best microbes to improve nutrient availability to plants. Growcentia aims to help growers and farmers maximize the health of their soils or growth media to enhance plant health, quality, and yields while minimizing environmental impacts of agriculture.

Our technology has been extensively tested by growers and farmers around the world and by leading US academic institutions and is proven by these institutions and independent labs to increase growth. We are a Colorado company based in Fort Collins and all production is done in-house for quality control. Our beneficial bacterial formulas run clean in hydroponic systems and are an excellent way to derive organic benefits (OMRI listed in the US and Canada as well as California OIM certified) without sacrificing water quality.

Our products were developed by screening billions of soil microorganisms to identify those that most efficiently release bound phosphorus, making it available to plants. We then selected for further enhanced microbial efficiency, ultimately resulting in a consortium of soil bacteria that are thirty times more effective at releasing bound soil P.

Why We Are Different

Nutrient Cycling
Our development platform focuses on nutrient cycling processes that release soil P and micronutrients from bound forms, thus improving nutrient availability to plants.
High Throughput
Our high-throughput platform allows us to select highly-functional microbial consortia from the overwhelming microbial diversity found in natural soils – under conditions that ensure they work equally well in soil, soilless, and recirculating hydroponic systems.
Microbial Phenotyping
Our directed microbial phenotyping platform coupled with cutting-edge high-throughput molecular techniques is highly effective. Many other microbial products use a non-directed approach by simply mixing microbes, which results in a microbial concoction of unknown provenance or functionality.

Quality First

Quality control is a priority at Growcentia. Every production lot is quality-tested to ensure it meets our high standards using cutting-edge DNA sequencing analyses. Before releasing a product, we extensively test all our products in the lab, greenhouse, and field to ensure efficacy. New products will only be released if they meet our stringent standards.

Our Brands


Hydro to Soil / University Tested / Bloom Enhancer

MAMMOTH P is the first organically derived microbial inoculant that maximizes phosphorus and micronutrient cycling to maximize growth, increase yield, and enhance plant health.

YETI Bloom®

Hydro to Soil / University Tested / Bloom Enhancer

YETI Bloom is an organic microbial biostimulant for the specialty crop sector. Yeti works well in both soil and hydroponic systems and works in a range of growing conditions.

Who We Are

Gregg Steinberg

Gregg Steinberg


Gregg has been involved in startups to mature companies and from private to public entities. He has experience in launching and scaling early stage companies, executing on valuation creation strategies and in raising seed/venture capital. He has been an investor and advisor in numerous companies including retail and commercial CPG product rollouts. He was President of a company that was listed twice in the top 10 of the INC500 and cumulative revenues under his presidency of that organization exceeded $2 billion. He is an active member of Young Presidents Organization (YPO/WPO) and sits on numerous charitable boards, including the American Committee for the Weizmann Institute for Science, The Simon School (University of Rochester) Executive Advisory Board, and the Global Institute of Leadership, Tufts University. He received his MBA from the Thunderbird School of Global Management and BSBA from the University of Arizona.
Colin Bell, PhD

Colin Bell, PhD

Co-Founder, Co-Inventor, Chief Growth Officer

Colin completed his Ph.D. at Texas Tech University in 2009 and became a member of the Wallenstein lab in August 2011. His initial research involved working with the collaborative research team at the prairie heating and elevated CO2 experimental site (PHACE) in Wyoming. The overall goal of this project was to characterize the effects of elevated atmospheric CO2 and increased temperatures on the metabolic and physiological characteristics of plant and soil microbial properties associated within plan community rhizospheres in the mixed grass prairie. His more recent research interests focus on specific plant species-microbial relationships within the rhizosphere stoichiometry and plant rhizoengineering mechanisms that influence soil microbial taxonomic functional diversity to promote plant fitness.
Matt Wallenstein, PhD

Matt Wallenstein, PhD

Co-Founder, Co-Inventor, Chairman

Matt is a globally recognized expert in how living organisms in soils help cycle nutrients to support healthy plants, with over 90 publications and many awards including the National Science Foundation’s CAREER award. He is a professor and Department Head of Soil and Crop Sciences at Colorado State University.
Richard Conant, PhD

Richard Conant, PhD


Rich is an ecosystem ecologist at the Natural Resource Ecology Laboratory and a Professor in the Department of Ecosystem Science and Sustainability at Colorado State University. He is also affiliated with the International Livestock Research Institute and Queensland University of Technology. He is studying how land use and land management practices impact carbon and nitrogen cycling in agriculture and grassland ecosystems. Rich is a participant in national and international efforts to quantify human impacts on carbon cycling and he earned his Ph.D. at Arizona State University in 1997.