We associate fall with the autumnal colors of deciduous shrubs and trees, but what causes these colors, and why do some plants drop their leaves in preparation for winter? We’ll discuss the processes behind these changes as we enjoy a palate of hues in beautiful Cascade Canyon. This walk is for ages 15 and up.

We request that no pets (except service animals) attend. High fire danger may cancel: Call (415) 893-9527 after 7am on the morning of the event to hear a recorded message if cancelled.
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