Blackleaf is characterized by a general
darkening of grapevine leaves in the
outermost layer of the canopy. A Washington State University Extension information page.
Dr. Loosen is a world-renowned wine estate in Germany, producing distinctive, highly acclaimed Rieslings from the steep, slate-soil vineyards of the Mosel valley.
Bob Dempel planted the Dempel Hopland vineyard and wine grape nursery in the picturesque Sanel Valley of Mendocino County, California over thirty years ago.