Growth, built
through science.
From a fish tank in 2016 to OMRI-certified formulas studied by the USDA — our story is about patience, microbiology, and giving plants what nature always intended.
Fish poo. Sea kelp.
The science of life.
Our founder started with a simple observation: the water from his aquaponics tank grew plants faster and greener than anything on the market. It wasn't just nitrogen — it was a living microbial community, evolved over millions of years to feed roots.
A decade later, that same microbiome is the backbone of every OPB product — a complete ecosystem of beneficial bacteria, fungi, and enzymes, packaged for the home gardener.
A decade of
measurable results.
Three pillars. One ecosystem.
Living biology
Every product carries a curated community of beneficial microbes — alive, active, and ready to colonize root zones from the moment of application.
Sustainable inputs
Pine and cedar industry waste, sea kelp, fish hydrolysates. Nothing synthetic, nothing extracted from the soil that should stay there.
Independent science
USDA, UC Berkeley, Bartlett Tree Experts. We do the trials, share the data, and stand by what the research finds — even when it surprises us.
Built over time,
not overnight.
Trusted down
to the molecule.
Join our growing
community.
Tens of thousands of gardeners, landscapers, and growers in 14 countries put OPB in the soil every week. We'd love to count you in.