Spring Blossoms by Carole Gerber with illustrations by Leslie Evans is another one of these experiential books I'm fond of. With this one, you just sink into the experience of spring by focusing only on flowering trees.
The early part of the books involves just how some flowering trees look. After you get used to that, you move on to trees that bear both male and female blooms. Moving on, we come to pollen moving from male blooms to female blooms on balsam firs. There's a progression from less sophisticated information to more sophisticated.
I'm aware that I've been focusing a lot on picture books for this environmental book club. I'm working on that.