…is growing more than one crop on the farm. When a variety of crops and weeds are planted together, a healthier ecosystem is created.
With grapes, you look for the particular right spot to plant. Some folks look for a match with each grape varietal. Others do more of a field blend that mirrors a region in Europe where a group of varietals have done well. Having said that, farms can incorporate other crops that will thrive in that particular soil and climate.
Grapes turned into wine yield a higher dollar return then they could on their own as grapes. This can make it hard to plant other things that yield a lower return. Yet some producers have chosen this added diversity in agriculture which helps with the overall immune system of the farm, in particular by attracting beneficial insects.
Many wineries have created sizable personal gardens that offer similar benefits.