Rock River Laboratory – Watertown
Watertown, Wisconsin
Family-run Watertown lab network headquarters offering soil, tissue, manure, lawn-and-garden and nutrient-plan services to growers and agronomists.
Details & contact
Agronomic soil fertility · Soil texture & nitrogen tests · Plant tissue & stalk nitrate · Manure analysis · Lawn & garden analysis · 590 nutrient management plans
Mail-in samples · convenience pickup routes
Public-source listing · Checked 2026-10-01. Confirm availability directly.




