Tropicals & Tender Perennials: lighter/darker season??, 0 by tiG

tiG wrote:
is it lighter in heat or cold?? Here is Melon Kisses that last week was blooming dark, but the two newest blooms are much lighter, and Spring Peach is doing the same thing. Nights are probably 20 degrees cooler than two weeks ago. But one (DxS R) that bloomed two months ago has darkened up considerably. Is there a general rule?

2 lightest blooms on this are 2 or 3 days old, compared with the ones in the back that are almost a week old. The oldest ones were that dark at 2/3 days.