How do plants know when it’s Autumn? How do leaves know when to turn red and fall off? 653 viewsJanuary 3, 2024 Question92.01K October 10, 2020 0 Comments How do plants know when it’s Autumn? How do leaves know when to turn red and fall off? In: Biology 7 Answers ActiveNewestOldest Anonymous Posted October 10, 2020 0 Comments the days are shorter. the leaves don’t return enough sustenance to warrant maintaining them during winter so the circulation is cut off to them and they dry out and slough off like excess skin. when the days are longer new leaves become useful again. You are viewing 1 out of 7 answers, click here to view all answers. Register or Login
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