Climate change is putting pressure on the water management of vineyards. We tested in a temperate vineyard in Germany, whether moss could serve as a ground cover underneath the vines, as an alternative to bare soil or grass. Over 22 months, we measured how quickly and how much the soil became wet after rainfall. Moss kept soil moisture similar to bare soil, without the slower water entry seen under grass. This suggests moss could offer a low-maintenance option for future vineyard management.