Appreciating Small and Mighty Polly Chandler · Jun 18, 2018 · Caterpillars are on the move at the San Francisco Botanical Garden. Visitors are warned to proceed with caution as 100's of small caterpillars feast on their only food, the California Pipevine. California Pipevine Swallowtail Butterflies … [Read more...] about Appreciating Small and Mighty