Events are free unless noted. Please email calendar submissions at least two weeks in advance to . Online ordering through March 26. Select from 100 species of habitat-friendly native plants to be picked up April 21-22. Tualatin Hills Nature Center, 15655 S. W. Millikan Way, Beaverton; 9 a. m. March 19, and April 5 and 16. Meet at the Nature Center for a 1. 5- to 2. 5-hour walk. Tualatin Hills Nature Park, 15655 S. W. Millikan Way, Beaverton; Through May 6. This nine-week, hybrid course helps participants create a practical land management plan. $60; 10:30-11:30 a. m. second Thursday of the month. Learn about the garden’s history, new additions, heritage trees, seasonal plants, habitat restoration and more. $5; Leach Botanical Garden, 6704 S. E. 122nd Ave. ; 1-3 p. m. third Thursdays and Saturdays of the month. Learn techniques and concepts, and do a different project each month. $35 includes all materials; register at (online via Zoom) First Wednesday of the month through November. Take part in a 10-class series taught by permaculture expert Marisha Auerbach featuring seasonal information about planning, growing, maintaining and harvesting food from your garden. $185 for all 10 classes, $100 for a five-class series, or $25 per class; for more information visit or email ; register at 6-8 p. m. last Tuesday of the month; Jessie Mays Community Hall, 30975 N. W. Hillcrest St. , North Plains or online via Zoom; or email 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; 7 p. m. third Tuesday of the month except January, July, November and December. Discuss seasonal topics and learn from guest speakers. Western Seminary, Bueermann Hall, 5511 S. E. Hawthorne Blvd. ; 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; 10-11:30 a. m. Learn steps to help prepare your spring garden for successful vegetable growing. Nadaka Nature Park Community Garden, 17615 N. E. Glisan St. ; registration required at or 503-208-4651 10 a. m. -noon. Mason bee expert Ron Spendal will focus on environmental needs, nesting behaviors and housing devices attractive to mason bees. PCC Rock Creek (Building 4, Room 103), 17705 N. W. Springville Road; 12:30-1:30 p. m. This is an optional to the above March 9 course. $20; Gresham Japanese Garden, 124 S. Main Ave. ; register at (online via Zoom) 5:30-7:30 p. m. March 13, 20 and 27. Join Master Gardener Angelina Lai for a four-night introductory series into the world of beekeeping. $35; register at ; email or call 564-397-5738 for more information 10 a. m. Speaker: Bowen Blair; The Portland Garden Club, 1132 S. W. Vista Ave. ; 9 a. m. -3 p. m. March 17-18. Shop from a variety of native and companion plants, and enjoy free guided tours. Deepwood Museum & Gardens, 1116 Mission St. S. E. , Salem; 9 a. m. -3 p. m. The Scholls Women’s Club will have fruit, flowering, ornamental and weeping trees available for purchase. Hoffman Farms Store, 22242 S. W. Scholls Ferry Road, Beaverton; 10 a. m. -noon. Receive guidance through the steps of a yearly plan, including fertilizing and pruning, and get advice on selecting the right rose cultivar for your garden. WCMGA Learning Garden at Jenkins Estate, 8005 S. W. Grabhorn Road, Beaverton; 10 a. m. -noon. Join a backyard habitat certification expert in discussing how to build habitat areas, hedgerows and rain gardens. $15; CASEE Center (Building B, Room 205), 11104 N. E. 149th St. , Brush Prairie; register at , or call 360-737-1160 10:30 a. m. -1:30 p. m. Learn to plant native plants such as sedges, woodland strawberry, sword fern, fringecup and more. Chehalem Ridge Nature Park, 38263 S. W. Dixon Mill Road, Gaston; 11 a. m. -2 p. m. Celebrate the beginning of spring and recognize the impact and influence of Japanese culture on our state. State Capitol State Park, 900 Court St. N. E. , Salem; 11 a. m. -3 p. m. Celebrate the arrival of spring with free classes, giveaways, tool sharpening and more. Farmington Gardens, 21815 S. W. Farmington Road, Beaverton; 6-7 p. m. Get a handle on those pesky weeds. Opens at 7:15 a. m. Take part in any of 68 classes covering forestry and tree growing topics. $65 per Clackamas County resident, $80 per out-of-county adult, $30 for ages 14-18 with adult; registration required at Clackamas County Community College, 19600 Molalla Ave. , Oregon City; 10 a. m. -noon. Master Gardeners Jack Berhardsen and John Moore will discuss how to help you save time, effort and money on your gardening adventure. Pacific Park Natural Demonstration Garden, 1515 N. E. 164th Ave. , Vancouver (enter from Northeast 172nd Avenue); email or call 564-397-5738 for more information 6-7 p. m. This webinar will introduce the principles of naturescaping or gardening with native plants. 9:30-11:30 a. m. or noon-2 p. m. Learn how to graft apple or pear trees using bench grafting techniques. $40 includes a tree to take home; Clackamas County Community College, Clairmont Hall (Room 117), 19600 Molalla Ave. , Oregon City; , 6-8 p. m. April 12, May 10 and May 22. Join a Weed Watcher Workshop and learn how you can help prevent the spread of invasive species. This workshop highlights Early Detection and Rapid Response (EDRR) weeds in the Tualatin River watershed. (online via Zoom) 6-8 p. m. Learn ways to bring your landscape back into a scaled composition. $45; register at 8 a. m. -3 p. m. Join Tualatin SWCD and West Multnomah Soil & Water Conservation District for multiple sessions on a variety of topics related to soil and soil health. $35; PCC Rock Creek, 17705 N. W. Springville Road; 12:30-1:30 p. m. This is an optional recap to the above April 13 course. $20; Gresham Japanese Garden, 124 S. Main Ave. ; register at 10 a. m. Speaker: Soho Sakai; The Portland Garden Club, 1132 S. W. Vista Ave. ; 9 a. m. -3 p. m. Enroll in this hands-on workshop with two instructors for an optimal learning experience. $100; Vanport International, 28590 S. E. Wally Road, Boring; register at 10 a. m. -2 p. m. Discuss the tools and techniques you’ll need to design your landscape and get help with creating your own design. Location TBD; 10 a. m. -2 p. m. Local vendors will sell organic tomato starts, perennials, natives, garden tools, houseplants and more. Eastmoreland Garden, 2425 S. E. Bybee Blvd. ; -- Corey Sheldon Stay in the loop. Sign up and join the conversation at the.