The SNOW QUEEN Hydrangea however, is far even more showy and flamboyant than the original Oak Leaf Hydrangea. It was originally discovered as seedling (by William Flemer III of New Jersey`s famous Princeton Nurseries). develops into a shapely compact plant. Eventually it will mature to approximately 3-3.5m but by 5 years old you can expect a shrub to about one and half metres tall and wide