When will cottonwood trees stop shedding? Fluffy seeds fill the air for around 4 weeks
- Posted on June 18, 2025
- By Detroit Free Press
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When will cottonwood trees stop shedding? Fluffy seeds fill the air for around 4 weeks

Every year the eastern cottonwood trees in Michigan release their fluffy seeds. The end of June likely marks the end of this process. Here's what to know.