In Search of Galls at Jack London State Historic Park

Plant galls are some of nature’s most unusual creations. This hike will explore various plant communities to look for this unusual relationship between plant, animal, and usually a type of insect. Specimens may include the striped volcano, witch’s hat, spined turban, urchin, willow leaf, spiny leaf and “oak apple” galls.

The guide on this fascinating excursion is Carolyn Greene, an endlessly curious naturalist who has been observing, pondering, and posing questions about botanical wonders for decades. With a degree in biogeography from the University of California and a specialty in botany, Greene has worked as a field biologist, conducting wildlife, plant, and restoration research for the past 25 years, at local parks and California State Parks and for the U.S. National Park Service. She is also a certified California Naturalist and “Cal Nat” trainer.

Reservations required: https://jacklondonpark.com/events/fall-for-galls/

$10 per person, plus $10 per vehicle park entry fee.