St. Louis on the Air cover image

No, St. Louis is not arriving later at peak fall foliage. A biologist explains why

St. Louis on the Air

00:00

Is There Just No Rhyme or Reason to When Leaves Turn Red?

When a leaf turns red, that's its way of protecting it se which and it can hoard those adrians. And the red color is not like a side product. In the earlier days, you know, people thought allth is coming out because chlorophyl is being broken down; now the red or yellow is visible. That is not true. The red is actually a a pigment that is costly for the plant to produce,. And so like a red maple, like what you're holding up here, this is a plant that has extra good sunscreen.

Play episode from 02:47
Transcript

The AI-powered Podcast Player

Save insights by tapping your headphones, chat with episodes, discover the best highlights - and more!
App store bannerPlay store banner
Get the app