As vineyard margins tighten, growers should rethink under-vine management, shifting from bare soil to biologically active systems

Across much of the vineyard industry in the United States, margins are tightening. Input costs remain elevated, grape prices are under pressure, and wine demand has softened since peaking around 2018. In some regions in California, grapes are being left unharvested, discounted, or diverted to low-value outlets like ethanol production. Growers are responding by reducing inputs and transitioning land to other uses, reflecting a broader reassessment of the long-term viability of viticulture in the U.S.

In this environment, the economic question has shifted from maximizing yield to maintaining a viable system under uncertainty. Reducing input costs without sacrificing long-term productivity has become central.

Most cost-cutting efforts focus on fertilizers, sprays, or labor. Yet one of the most consistently managed, and least reconsidered, areas sits directly beneath the vine. The under-vine strip is typically treated as a weed problem, but it is also the primary root zone of the vine. Rethinking how that space is managed presents a practical opportunity to reduce costs while improving system function and soil tilth.