The Lord of the vineyard and the servant go to examine one of the young and tender branches planted in the nethermost part of the vineyard. The first thing described is that the new tree is flourishing. Then comes the important question.
The servant asks why they were planted in such a place when it was poor ground; it was “the poorest spot in all the land of [the] vineyard.” This place is not clearly defined in the real world, and might not need to be. The point is that the location is not the reason for the flourishing of the gospel. Even difficult places can yield faithful children of Israel. It is for that reason that God nourishes and cares for all of his children, wherever they might be.