• Cedar Mill Garden Club March Meeting
• Weed Wranglin’ Workshop
• Soil School 2026
• Skyline Grange tree & native plant sale
• Supporting Biodiversity: 15 Critical Actions to Support Your Local Ecosystem
• Treekeepers of Washington County programs, free
• Master Gardeners

Cedar Mill Garden Club March Meeting

Wednesday, March 18, 11 am, Beaverton City Library, 12375 SW 5th, Cathy Stanton Room

Come join us for Master Gardener Stephanie Engle’s presentation  on Improving Your Soil. Drop-ins welcomed.

Weed Wranglin’ Workshop

Wednesday, March 18, 6-7:30 pm, Metzger Park 8400 SW Hemlock St., free

Weeds! They can be everywhere, and we all have to deal with them. With so many different kinds sprouting up in our gardens and so many ways to control them, it can be difficult to get started. Join Tualatin Soil & Water Conservation District (TSWCD) at Metzger Park in SW Portland for this free one-hour workshop and 30-minute casual discussion where we will jump into some weed-wranglin’ tips to help you get those weeds under control. Topics covered include key plant terminology, an overview of our weed management strategy, and a walk through of how to manage several common weeds. Please feel free to bring in any examples of problem weeds from your yard. Copies of our handy Weed Watchers Guide will be available. Snacks and drinks provided! Registration required.

Soil School 2026

Saturday, April 4, 8:15-3:05, 17705 NW Springville Rd, $35

Calling all gardeners—from aspiring to advanced—to Soil School 2026! The event offers ten sessions taught by experts to learn about how improving soil health improves plant, garden, and habitat health. Soil School is hosted by West Multnomah Soil and Water Conservation District and Tualatin Soil and Water Conservation District. Registration is required; $35 covers the whole day, including breakfast and lunch. Scholarships are available. More details and registration available here. Email eleanor@wmswcd.org with questions about registration, or to request translation or accessibility services.

Skyline Grange tree & native plant sale

Friday-Saturday, April 3-4, 9-5, 11275 NW Skyline Blvd., free admission

Our 21st Sale. All stock is from licensed local nurseries, offering both quality and quantity at good prices. Skyline Grange has a Temporary Nursery Sale license from the Oregon Dept. of Agriculture. The sale offers 95+ native species, available on sale days or via downloadable pre-order form submitted by March 22; and fruit-bearing, ornamental & shade trees available only on sale days.

Supporting Biodiversity: 15 Critical Actions to Support Your Local Ecosystem

Wednesday, March 18, 7-8:30, Skyline Grange, 11275 NW Skyline Blvd., free

This is a fast-paced, practical workshop looking at 15 urgently needed actions to create healthy, functioning ecosystems. Learn strategies for designing and caring for wildlife-friendly spaces that fit within your neighborhood’s standards. Join us to learn how to make short work of these urgently needed actions! Zoom speaker is Sarah F. Jayne, speaker for Homegrown National Park and author of “Nature’s Action Guide: How to Support Biodiversity & Your Local Ecosystem.”

Treekeepers of Washington County programs, free

We work to protect and advocate for trees in urban unincorporated Washington County. Don’t miss our upcoming events! All events are free. Visit the Treekeepers website to learn more.

Tree Walk: Noticing Fractals in Trees at Commonwealth Lake

Thursday, March 5, 5-6:30 pm, Commonwealth Lake, free

Commonwealth Lake Park offers lots of opportunities to spot fractals in nature. Fractals are repeated patterns that mirror the structure of the whole: deciduous trees with their bare branches, evergreens, shrubs along the lake, ferns, feathers on waterfowl, ripples on the water, and frequently magnificent clouds with their repeating shapes. With this late day walk, we may even be immersed in a gorgeous sunset reflected in the lake! Commonwealth Lake has a paved, flat trail all around it, about 0.8 mile. We will be making two trips around the lake at a normal walking pace, with stops to examine fractals. Register for the walk here.

Webinar: Caring for Trees That Are Homes for Birds

Thursday, March 12, 6:30 pm, online via zoom (registration link), free

When it starts warming up in the Pacific Northwest, birds and other wildlife are exploring our local trees and shrubs looking for places to nest. Ryan Gilpin, a consulting arborist, regularly trains arborists in working responsibly around wildlife. Join us as he shares his knowledge about trees, birds, how they come together, and what you can do to care for both.

Lupine seed cleaning

Friday, March 13, 2-3:30 pm, Camille Park, free

Ross Tewksbury has rescued some bags of native lupine seeds that we can use to replant in restoration spaces. Help us strip the seed pods from the stems to ready the seeds for planting. It’s a simple and soothing task, and will give us a chance to chat while we do some good for the earth! We’ll be meeting at the picnic shelter at Camille Park so we’ll stay dry no matter what the weather. Bundle up and join us—and go home with some lupine seeds of your own to sow.

Ivy pulls: join our on-call ivy crew

October-March, dates and locations will vary, free

English ivy hangs on through winter at a time trees are particularly vulnerable. The invasive vines keep growing while trees are dormant, and the excess weight can increase risks for trees during winter storms. Help us save trees by removing ivy and other invasive plants that threaten them. ​Weather makes it hard to schedule events, so please, sign up and we’ll notify you when there is a good weather window so we can schedule an ivy pulling event in various locations within Washington County. You can also check our events page for current ivy pulls.

Master Gardeners

The Washington County Master Gardener™ Association (WCMGA) sponsors a wide variety of gardening–related demonstrations, lectures, seminars and workshops in various Washington County Oregon locations. Most of our events are free and open to the public. The WCMGA is a 501(c)3 non-profit supported by hundreds of volunteers, who work to educate the public about sustainable, affordable gardening.

Harnessing nature: effective biological control strategies for master gardeners

Tuesday, March 3, 7-8 pm, online via zoom (registration required), free

Paola Sotelo-Cardona (IPM Educator/Oregon IPM Center, OSU) is a biologist with extensive experience in sustainable agricultural practices, specializing in entomology, plant protection, integrated pest management (IPM), and agroecology. Her current responsibilities include organizing IPM-related educational events, creating educational materials, and engaging with stakeholders to address IPM needs. This presentation will discuss the importance of insects and the diverse ecological services that beneficial insects provide. Additionally, it will detail the different types of natural enemies and their roles in Integrated Pest Management (IPM) practices. Class approved for one hour of Continuing Education credit for MG Perennials.

Tropical delights: your guide to growing and preparing tropical produce

Saturday, March 21, 10-noon, 17705 NW Springville Rd, Building 4, Room 103, free

This presentation by Lakshmi Srinivasan (OSU Extension MG Volunteer) instructs on how to grow an assortment of vegetables that make great conversation pieces and provide you with nutritious meals! Learn about some vegetables that are typically not grown in the PNW—bottle gourd, lemongrass, taro root, black chickpeas and more. Learn tips and tricks on how to start veggies from seed using a simple homemade set up. Learn how to cook them and take home some recipes! For more information, check the Master Gardeners official website. Approved for one hour of Master Gardener Education Credit.