The estate Willi Haag cultivates 6.5 hectares of vineyards in steep, partly extremely steep location. The weather-beaten slate soil domination in the vineyards is perfectly suitable for the cultivation of the Riesling grape. 60 hl of wine per hectare are produced on average. 50% are left naturally sweet, the remainder are produced dry or semidry in equal shares.
The steep slope opposite the small town Brauneberg is called 'Juffer'. Within the ‘Juffer’ the very best vineyards are situated aroud the sundial (german: Sonnenuhr) and are therefore named ‘Juffer Sonnenuhr’. The ‘Juffer Sonnenuhr’ is one of the top German locations for winegrowing - Riesling cultivation is mandatory here.
The promotion of wine-growing on the steep slopes and, connected with that, the preservation of this cultural landscape is part of the philosophy of the Haag family. Great importance is as well attached to the cultivation of the Riesling grape, which is typical for the Moselle. Vineyards on steep slopes have a share of 95% and the Riesling is represented at 100%.
The estate Weingut Willi Haag receives funding from the European Agricultural Fund for Rural Development (EAFRD) within the framework of the Rhineland-Palatinate Development Program "Environmental Measures, Rural Development, Agriculture, Food" (EULLE) managed by the Ministry of Economic Affairs, Transport, Agriculture and Viticulture co-financed by the state, a grant for its achievements in the agrarian and climatic measure Environmentally friendly management of the steep and steep surfaces in the viticulture.