Best blue: Nikko Blue or Endless Summer?
I used to grow Nikko Blue back when I didn't know what I was doing, and it bloomed fine at the base of a white birch tree along the west property line. When the white birch died, I moved Nikko Blue over the the east side of the house--kinda east/southeast. It got some direct sun for a couple hours mid-day. It was never happy, and over the next year and a half, just dwindled away to nothing. It is possible that I didn't water as conscientiously as possible in its new location, but I'm not sure.
I'd like to try another blue (Nikko or otherwise) perhaps in the same spot on the east/southeast side of house. Some growing tree branches are providing a bit more shade there, though it would still get some direct sun at mid-day. If that is a hopeless place, I perhaps could plant one back over near the west property line in front of the river birch--however, I have several hydrangeas in that area and really wanted one or two elsewhere in the yard, but.... I'm flexible, in other words.
Well, this is the long way to the question: Is Nikko Blue still the best choice for a blue? My neighbor is growing Endless Summer now. She complained about no blooms for several years, and a Kansas nursery posted here that Endless Summer doesn't bloom that reliably for Kansans. This past summer, however, my neighbor's Endless Summer finally did bloom, and very nicely.
I realize Endless Summer is supposed to rebloom (didn't for my neighbor). Other than that, how do these two blues compare? Color, bloom size, length of bloom, bush height/width, etc.
I was perfectly happy before with Nikko Blue. Just wondering if something better has come along that I should consider.