Okay, I'm officially Confused. (Nothing new there.)
From what many here have posted, I was under the perhaps mistaken impression that a dose of high nitrogen fertilizer would would serve as a "kick in the pants" for roses to explode into glorious bloom. When I look at what is marketed as "Bloom Food," however, I'm noticing that many of them are not high N, but rather high P--P as in phosphate.
In the back of my mind I'm hearing Karl Bapst remind me (yet again-I'm a slow learner about this) that "roses can't read," but still, which is it that jumpstarts bloom--Nitrogen or Phosphate?