Autumn’s changing colors and falling leaves means now is the perfect time for artist Jeremy Joan Hewes’ mixed-media art exhibit, ‘Let’s Talk About Trees,’ featured at the Sebastopol Gallery. Hewes celebrates the region’s bounty of trees, especially oak and conifers, by combining photographs with acrylic paintings for layered images on handmade paper or canvas. These imaginative scenes conjure up Hewes’ love for wandering among nature, and the former writer and editor, and now photographer and printmaker, infuses these works with Walden-esque visual poetry. Hewes and several other artists are on hand for an opening reception on Saturday, Oct. 7, at Sebastopol Gallery, 150 N. Main St., Sebastopol. 4pm to 6pm. Free. 707.829.7200.