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DPH Biologicals Expands Regenerative Market Presence with RegenAphex Technology Platform

Indianapolis, IN– May 2, 2023 – After two years of developmental work, DPH Biologicals announced today RegenAphex™, a new technology platform based on the regenerative power of a proprietary plant-based humus extract produced at the company’s Princeton, Illinois site, the largest plant-based composting facility in the United States.  

DPH Biologicals scales first-of-its-kind biostimulant in turf and ornamental market

Indianapolis, IN – April 19, 2023 – To help turf and ornamental (T&O) professionals deliver the climate-resilient turf, ornamental plants and trees their customers expect, DPH Biologicals™ announced global distribution of RootXCell™, a unique biostimulant combining living biologicals with a powerful, well-known plant growth hormone.

Case Study: Row-Crop Farmer Unlocks Fertility Using SP-1 Classic Biofertilizer and Saves $200,000

Missouri row-crop farmer Derek Davis was over budget and frustrated with a complicated, expensive fertility regime until he took a chance on DPH Biologicals’ Terra Trove® SP-1 Classic®. Learn how Davis combined in-furrow and foliar applications of SP-1 Classic® and other proven DPH Biological products to unlock his soil fertility, reduce his input bill and improve farm profitability.


Indianapolis, IN – February 1, 2023 − To meet demand for sustainable crop protection, DPH Biologicals launched today a multi-action biofungicide seed treatment – BellaTrove™ Companion Maxx ST – that helps seedlings fight pathogens and ensures healthy root systems.

DPH Biologicals™ Appoints Cliff Watrin Vice President of Agronomy

Princeton, IL – March 9, 2022 – Today DPH Biologicals™ announced Cliff Watrin has joined the company as vice president of agronomy, responsible for advancing the company’s technical product positioning and customer agronomic support. Watrin brings more than 30 years of leadership and agricultural research and development experiences to this newly created role.


  • Expands industry leading SP-1 biofertilizer as the basis for a portfolio branded as TerraTrove™
  • Rapidly scaling production to help lessen impact of synthetic fertilizer shortages

LIBERTY, MO – November 30, 2021 – Today at the Biostimulants World Congress, Douglas Plant Health announced it has changed its name to DPH Biologicals. The new name recognizes the century-long commitment of its parent company, Douglas Products, to deliver effective and high-quality products to its customers while more clearly focusing on expanding its biologicals product platform to deliver value to customers by sustainably increasing productivity, yield and profitability.