Autumn is the time for football and to relish the most beautiful of our four seasons. Many trees have been waiting to show off their foliage. One of the great things about living where we do is the ever-changing seasons. For a few weeks, nature puts on one of its most spectacular displays as trees complete the growing season in a brilliant display of fall colors.

This is about the time of year I start getting inquiries from local media about why leaves turn colors in the fall. What they really want to know is the exact week of peak color to inform the leaf-peepers. I usually respond that the plants are preparing to enter dormancy and peak color depends on prevailing weather conditions and is often unpredictable.

But what exactly is dormancy and why is it crucial to plants? Like explaining why leaves change color, the answer is not straightforward and “depends,” which is not the answer most people want to hear. I’ll attempt to explain in layman’s terms an interesting facet of a plant’s life.

Fans of perennial flowers admire both their longevity in the garden and their capabilities. Where they once planted a daylily, by division, they can have three or more clumps in a few years. Fans of annuals tout their quick results and their lengthy bloom period. Pop in your six-pack and, if it isn’t blooming already, it soon will be – and will bloom for months on end. No wonder biennials are the Rodney Dangerfields of the flower world ...