"The blue goosefoot survived as a house stick in the vicinity of Neustadt an der Weinstrasse. In addition to the grape production, the planting on the house wall served to drain the damp cellars. Because the goosefoot has a tree-like growth. It has this in common with all varieties that come from the former monsoons of Central Asia. This grape variety was mentioned as early as 1504 in Deidesheim in the Palatinate and in Bock's book of herbs for the southern Palatinate. In 1766, Prelate Sprenger had a goosefoot in his collection in Maulbronn Monastery." (https://historische-rebsorten.de/rebsorte/blauer-gaensfuesser/)