The rocketing popularity of 'Endless Summer' results from the fact that, unlike most hydrangeas, this one has the ability to bloom as far north as Minnesota (maybe much further). In the south, where hydrangeas rarely bloom more than once per summer, 'Endless Summer' will often produce a full set of blooms twice each summer 'Endless Summer' may be blue, pink, or lavender, depending on the soil in which it is grown. It will not be dark blue, deep pink or purple. The intensity of a hydrangea, for the most part, stays the same, no matter what color it is. 'Endless Summer' is always light in intensity.