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