Events are free unless noted. Please email calendar submissions at least three weeks in advance to events@oregonian.com.
ONGOING
Chrysanthemum Festival: 10 a.m.-4 p.m. through Nov. 19. Take part in floral art workshops, plant cultivation talks and horticulture tours and delight in the garden adorned with chrysanthemums. $14; Lan Su Chinese Garden, 239 N.W. Everett St.; lansugarden.org.
Walk With a Friend at Tualatin Hills Nature Park: 9 a.m. first Wednesday and third Sunday of the month. Take a guided walk and learn about the plants, wildlife and history of the park. Tualatin Hills Nature Park, 15655 S.W. Millikan Way, Beaverton; thprd.org.
East Multnomah Soil & Water Conservation District free webinars: Discover how to care for land in ways that benefit people, water and wildlife. From stormwater solutions to biochar to water conservation, these workshops will help you save time, money and energy. Register at emswcd.org/workshops-and-events/upcoming-workshops.
Greater Portland ris Society meeting: 7 p.m. first Tuesday of the month in March, April, September, October and November. Enjoy discussions of irises with guest speakers. Ainsworth House, 19130 Lot Whitcomb Drive, Oregon City; greaterportlandirissociety.org.
Happy Valley Garden Club monthly meeting: 9 a.m.-noon second Tuesday of the month. Happy Valley Baptist Church, 14095 S.E. King Road, Happy Valley.
Ikebana for Every Season: 1-2:30 p.m. second Tuesday of the month; $45. Become knowledgeable about basic concepts, techniques, tools, equipment and care for ikebana. The Resource Center, 219 S. Main Ave., Gresham; GreshamJapaneseGarden.org.
Portland Dahlia Society monthly meeting: 7 p.m. second Tuesday of the month February through November. Take part in a discussion of seasonal topics. Oaks Park Dance Pavilion, 7805 S.E. Oaks Park Way; portlanddahlia.com.
Estacada Garden Club monthly meeting: 1-3 p.m. second Thursday of the month. Estacada Public Library, 825 N.W. Wade St.
FRIDAY, NOV. 17
Pesticie CORE training: 8 a.m.-noon. This training qualifies for 4 CORE recertification credits as required by the Oregon Department of Agriculture. $40 registration at bit.ly/horteventbrite; Clackamas Community College, 19600 Molalla Ave., Oregon City; email lorettam@clackamas.edu for more information.