Quercus Biosolutions, a U.S. agro‑biotech startup, has closed an oversubscribed $5 million seed round led by Serra Ventures to develop a new generation of crop‑protection products based on AI‑designed mini‑proteins. The company is prioritizing herbicide‑resistant weeds and says it already has several programs in field trials.
Quercus Biosolutions: a raise to accelerate AI‑designed proteins
The round—backed by roughly ten institutional and agriculture‑focused investors—will fund expansion of target coverage in its herbicide program, strengthen the company’s patent portfolio, and explore applications of the platform beyond weeds, including fungi, insects and other pests. Founded in 2024 by Jon Lightner, PhD, and Matt Crisp, Quercus already reports five active programs and multiple ongoing field trials, according to company leadership.
An approach from drug discovery, applied to plants
Quercus is using AI tools that were initially developed for drug discovery, in partnership… (source text ends mid‑sentence)

