I was thinking about this . Is it just species/cultivar. Or do more dry soil resistant shrubs/annuals fare better.

The BLOOM colors of flowers/annuals/etc. In direct sun scorching sunlight 12 hrs a day. What allows some plants to maintain it's color in said conditions versus others which tend to bleach out. Is there a direct relationship on whether it can tolerate dry soil vs. moist soil. Bloom Size. Color of the bloom. Or is it different depending on cultivar. Or same species, but pink bleaches in the sun but electric orange or pink does not bleach. I know...too general of a question. Too many variables I suppose

In my flower beds it's mixed. Some that prefer shade and see more sun than they should I see the bleaching..... Other stuff in full sun all day, just maintains it's color from spring to 1st hard frost. Never did think much about this topic but I am curious.