For those who like ‘Niagara’ grape flavor, this white grape ripens at least a month earlier than ‘Niagara’ and has a growth habit that is much more controllable than that wildly vigorous variety. Hardy throughout zone 4, it has excellent general disease resistance and is able to ripen even in cool, short summers. When harvested at early maturity the flavor is mild enough that prize winning wines have been made from it. Left to hang, the flavor becomes stronger and more musky. Edelweiss likes moist, fertile soil for highest vigor and productivity, but even on average soils it will perform well.