Washington County Master Gardener Association

*PLANT PROPAGATION BY HARDWOOD AND SOFTWOOD STEM CUTTINGS
2025-11-15 10:00 - 12:00 (America/Los_Angeles) | PCC Rock Creek Campus, Bldg. 4, Room 104, Building 4, 17705 NW Springville Rd, Portland, OR, 97229, United States
FREE. Registration NOT required.
Discover the magic of plant propagation in this two-hour class! Delve into the art of softwood and hardwood cuttings, exploring techniques for their successful growth. Learn to nurture and propagate plants effectively with demonstrations and expert tips. This is a hands-on class and you will take your new starts home, so bring your work gloves and garden scissors/pruners if you have them, and a box or plastic bag. We will provide the rest. Get a copy of the handout here.
*Class approved for 1 hour Continuing Education credit for MG Perennials

*FORESTS IN FLUX: UNDERSTANDING TREE HEALTH, DECLINE, AND RESILIENCE IN NW OREGON
2025-11-04 19:00 - 20:00 | Master Gardener Webinar
FREE. Advance registration required. To register, please click here.
In this talk, we will explore the current state of the science of forest and tree health in NW Oregon, including forest, landscape, and urban trees. We will discuss tree species that are in decline and the ecological, economic, and social impacts of changing forests. Then we will explore tree species that are thriving, including native species like Willamette Valley Ponderosa pine and incense cedar. Updates on pests and pathogens, including emerald ash borer and Mediterranean oak borer, will be provided. Finally, we will discuss resources and best practices for maintaining tree health.
*Class approved for 1 hour Continuing Education credit for MG Perennials

*LAWN BE GONE!
2025-10-18 10:00 - 12:00 | PCC Rock Creek Campus, Bldg. 4, Room 103, Building 4, 17705 NW Springville Rd, Portland, OR, 97229, United States
FREE. Registration NOT required.
This class will cover turf removal methods and suggestions for what to plant in its place – ecolawn, waterwise plants, native plants or a pollinator garden. We will discuss planning, soil prep, planting tips, and touch on irrigation options. After the presentation we will visit the WCMGA Education Garden at PCC Rock Creek, weather permitting.
*Class approved for 1 hour Continuing Education credit for MG Perennials

*RAINWATER HARVESTING FOR LANDSCAPE USE
2025-10-07 19:00 - 20:00 | Master Gardener Webinar
FREE. Advanced registration required.
Click here to register.
*Class approved for 1 hour Continuing Education credit for MG Perennials

*PUTTING THE GARDEN TO BED
2025-09-27 10:00 - 12:00 | PCC Rock Creek Campus, Building 4 Room 103, Building 4, 17705 NW Springville Rd, Portland, OR, 97229, United States
FREE. Registration NOT required.
Fall is a great time to prepare for winter and to set up your garden for success year-round. We will share tips for landscape plants, best practices for planting trees and shrubs, tasks to prepare the vegetable and fruit garden for winter, and techniques to protect the soil. The in-class section will be followed by a visit to the WCMGA Education Garden for a demo of our tips including proper planting technique, and then a visit to the PCC RC vegetable and fruit garden to discuss techniques to prepare for winter. Helpful references will also be provided.
*Class approved for 1 hour Continuing Education credit for MG Perennials

*GROWING NATIVE PLANTS
2025-09-20 10:00 - 12:00 | The Gazebo, WCMGA Learning Garden at Jenkins Estate, 8005 SW Grabhorn Rd, Beaverton, OR, 97007, United States
FREE. Registration NOT required.
There is an increasing interest in growing native plants. Information will include the definition and role of native plants. What are the historical uses for native plants? What are the best native plants for your garden? Resources will be shared and there will be an opportunity to see a variety of native plants in the garden.

*Class approved for 1 hour Continuing Education credit for MG Perennials

NATURE JOURNALING
2025-09-06 10:00 - 12:00 | The Gazebo, WCMGA Learning Garden at Jenkins Estate, 8005 SW Grabhorn Rd, Beaverton, OR, 97007, United States
FREE. Registration NOT required.
Learn how to use simple prompts and materials to more deeply connect and engage with nature, truly see the world around you, and draw and write about what you see. We’ll show examples and guide you through the process of creating a nature journal page in a fun, interactive environment. Reap the benefits of spending time with others in nature and learn a little something about the Learning Garden’s plants and animals along the way. You’ll take home your first entry and the inspiration and knowledge you need to start your own journey of discovery anywhere you have access to nature. Bring your own journal, pens, and pencils to class or use provided paper and writing/drawing materials. For adults and children ages 10-17 accompanied by an adult. No experience necessary.

*GROWING GARLIC AND ONIONS IN THE PACIFIC NORTHWEST
2025-09-02 19:00 - 20:00 | Master Gardener Webinar
FREE. Click here to register for webinar
In this presentation we will discuss soil preparation, seeding, planting, harvest, curing, and storage of garlic, onions, shallots, and leeks.
*Class approved for 1 hour Continuing Education credit for MG Perennials

*HERBS FOR SUN AND SHADE
2025-08-23 10:00 - 12:00 | The Gazebo, WCMGA Learning Garden at Jenkins Estate, 8005 SW Grabhorn Rd, Beaverton, OR, 97007, United States
FREE. Registration NOT required.
Join the Herb class in the Learning Garden at Jenkins Estate. Tour the Herb Spiral featuring more than 40 herbs which do well in our Northwest climate. We will share how herbs can add beauty and fragrance to your garden. The class will discuss what to plant, where to plant and how to harvest, use and store, including growing in containers when you have limited space.
*Class approved for 1 hour Continuing Education credit for MG Perennials

OPEN GARDEN: INVERTEBRATES AND VERTEBRATES
2025-06-14 10:00 - 13:00 | PCC Rock Creek Campus, WCMGA Education Garden, H48Q+4P2 Bethany, Oregon, Portland, OR, 97229, United States
FREE. Registration NOT required.
Family Friendly Event.

Join us in the garden for hands-on activities for the whole family that celebrate invertebrates and vertebrates. Learn about pollinators, other beneficial insects, the wildlife in our garden and meet some farm animals from the PCC Rock Creek Farm. Get answers to your gardening questions from expert Master Gardeners. Free giveaways!

*GROWING VEGETABLES IN THE WILLAMETTE VALLEY
2025-06-14 10:00 - 12:00 | The Gazebo, WCMGA Learning Garden at Jenkins Estate, 8005 SW Grabhorn Rd, Beaverton, OR, 97007, United States
FREE. Registration NOT required.

Learn how to use raised beds and containers for the kinds of bountiful harvests you see at the Learning Garden at Jenkins Estates. Master Gardeners will demonstrate how to successfully plan, plant, and harvest vegetables in your home garden.
*Class approved for 1 hour Continuing Education credit for MG Perennials

*HYDRANGEA HIGHLIGHTS
2025-06-03 19:00 - 20:00 | Master Gardener Webinar
FREE. Click here to register for webinar.
No genus of shrubs has undergone such a transformation as Hydrangea has over the last couple of decades. There are hydrangeas to suit any garden – learn about the new varieties and less common species of Hydrangea – mop-heads, lace-caps, paniculate and oakleaf, interspecific crosses and intersectional hybrids, hydrangeas with sun tolerance and foliage interest, and more.
*Class approved for 1 hour Continuing Education credit for MG Perennials

**CANCELLED***GARDEN REFRESH - BREATHING NEW LIFE INTO OLD GARDENS
2025-05-31 10:00 - 12:00 | OR
*CANCELLED*
FREE. Registration NOT required.
Discover the art of garden restoration by learning techniques to revitalize old, overgrown, and neglected gardens! This course will equip you with the knowledge and skills to transform these older outdoor spaces into beautiful, thriving gardens. Learn practical techniques for assessing garden conditions, creating a plan, selecting plants and tools, while implementing sustainable gardening practices and gaining confidence in your ability to dig in and breathe new life into any garden.

*Class approved for 1 hour Continuing Education credit for MG Perennials

Gardenfest Clearance Plant Sale
2025-05-10 09:00 - 12:00 | PCC Rock Creek Hoop House, H48P+2QX Bethany, Oregon
Gardenfest Clearance Plant Sale
Unsold plants from our main Gardenfest Plant Sale at discounted prices.
In PCC Rock Creek Hoop House. Please park in lot D or E for easiest access.
Bring your own boxes and/or cart
In cooperation with PCC Rock Creek LAT student club plant sale. Link to LAT flyer.

HIGHLIGHTS FROM 2024 WASHINGTON COUNTY MASTER GARDENER PROGRAM PLUS ALTERNATIVE CROPS FOR THE PNW
2025-05-06 19:00 - 20:00 | Master Gardener Webinar
FREE. Click here to register for webinar.
The metro area Master Gardener Program Leader will present the 2024 program highlights, showcasing key achievements, outreach efforts, and impacts. Additionally, she will share insights into some of the research projects she has worked on such as melon grafting, sweet potato production, biodegradable mulches, and tea plant propagation and production, focusing on their relevance to sustainable gardening practices and grower education.

Gardenfest Plant Sale
2025-05-03 09:00 - 13:00 | PCC Rock Creek Campus, Bldg. 4, Building 4, 17705 NW Springville Rd, Portland, OR, 97229, United States
Join us for our 2025 Gardenfest Plant Sale, featuring over 5000 plants expertly selected for the PNW!
Check out the Gardenfest Plant Sale page for more details!

*VEGGIE DELIGHT: LEARN ABOUT VEGETABLES TYPICALLY NOT GROWN HERE
2025-04-26 10:00 - 12:00 | PCC Rock Creek Campus, Building 4 Room 103, Building 4, 17705 NW Springville Rd, Portland, OR, 97229, United States
FREE. Registration NOT required.
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!
*Class approved for 1 hour Continuing Education credit for MG Perennials

**CANCELLED** - *BASICS OF PLANT PROPAGATION
2025-04-19 10:00 - 12:00 | The Gazebo, WCMGA Learning Garden at Jenkins Estate, 8005 SW Grabhorn Rd, Beaverton, OR, 97007, United States
*CANCELLED*
FREE. Registration NOT required.
Learn how to make more of the plants you love using samples taken from selected plants in our Learning Garden. OSU Extension MG Volunteers will show you some of the basics of plant propagation. During this hands-on session, you’ll make starts of new plants and take them home. We’ll provide the necessary supplies but bring your favorite small pruners and gloves if you like.
*Class approved for 1 hour Continuing Education credit for MG Perennials

*SPRING CLEANING IN THE GARDEN
2025-04-12 10:00 - 12:00 | PCC Rock Creek Campus, WCMGA Education Garden, H48Q+4P2 Bethany, Oregon, Portland, OR, 97229, United States
FREE. Registration NOT required.
This outside demonstration and hands-on workshop will take place in the WCMGA Education Garden at PCC Rock Creek. It will include: the when, what and how of spring pruning, thinning, and transplanting; how to determine if your tree, shrub and plants are still living; tools that make the work easier; tool sharpening and cleaning; and more! Bring your pruning shears, gloves, and dress for the weather (and for some gardening!)
This is a rain or shine event.
*Class approved for 1 hour Continuing Education credit for MG Perennials

OREGON ODONATA: THE DRAGONFLIES & DAMSELFLIES AROUND US
2025-04-01 19:00 - 20:00 | Master Gardener Webinar
FREE. Click here to register for webinar
Learn about dragonflies and damselflies featuring: Taxonomy & brief history; Oregon species & portraits; Life cycle, habitat & diet; Amazing attributes; Finding dragons; Inviting odonates to your garden; and Helpful resources

*PERENNIALS: HOW TO CHOOSE, PLANT, AND MAINTAIN FOR YEAR-ROUND FLOWERS
2025-03-29 10:00 - 12:00 | OR
FREE. Registration NOT required.
Perennial plants are amazing – they give the garden beauty and food for wildlife plus they create an ever-changing tapestry of color. On top of that, they are a good investment since they come back year after year. This class will discuss different types of perennials and focus on long-blooming varieties. We will discuss how to best care for them in terms of planting, pruning, fertilizing, pest control, and general maintenance, plus tips to extend blooming time for year-round color.
*Class approved for 1 hour Continuing Education credit for MG Perennials

*GARDENING WITH PACIFIC NORTHWEST NATIVE PLANTS
2025-03-22 10:00 - 12:00 | PCC Rock Creek Campus, Bldg. 4, Room 103, Building 4, 17705 NW Springville Rd, Portland, OR, 97229, United States
FREE. Registration NOT required.
Come learn about the native plants that thrive in the PNW garden, how to naturescape in support of wildlife and pollinators, and consider the possibilities the Backyard Habitat Certification Program offers through its customized yard assessment.
*Class approved for 1 hour Continuing Education credit for MG Perennials

*EMERALD ASH BORER: MANAGING A NEW THREAT TO OREGON'S TREES
2025-03-04 19:00 - 20:00 | Master Gardener Webinar
FREE. Click here to register for webinar.
Emerald ash borer (EAB, Agrilus planipennis) is an invasive and highly destructive wood boring beetle that infests and kills ash trees (Fraxinus spp.). EAB was first found in Michigan in 2002 and quickly spread across North America, killing hundreds of millions of native and planted ash trees. In 2022, EAB was found in Forest Grove, OR, the first detection on the West Coast. In 2024, subsequent EAB detections were made in rural Yamhill, Marion, and Clackamas Counties. Ash trees are common in both urban and natural environments in Oregon, providing essential ecosystem services like shade, erosion control, air and water filtration, and critical habitat. While EAB poses a significant threat to these trees, we’re fortunate to draw on over 20 years of research and experience from the Midwest and East Coast to slow its spread and mitigate its inevitable impacts to ecosystems, economies, and public health. This presentation will provide 1) an overview of EAB and ash biology, 2) updates to the State of Oregon’s ongoing EAB survey, management, and communication strategies, and 3) planning and management strategies for EAB in both urban and natural areas. Click here for the link to the presentation slides.
*Class approved for 1 hour Continuing Education credit for MG Perennials

*GETTING WATERWISE WITH DRIP IRRIGATION
2025-03-01 10:00 - 12:00 | PCC Rock Creek Campus, Bldg. 4, Room 103, Building 4, 17705 NW Springville Rd, Portland, OR, 97229, United States
FREE. Registration NOT required.
Thinking about drip irrigation but not sure where to start? In this session we’ll cover the types of micro irrigation systems and where to use them. We’ll also discuss steps for a new installation or converting from an existing overhead system. Resources for information and supplies will be provided.
*Class approved for 1 hour Continuing Education credit for MG Perennials

*RAISING MASON BEES
2025-02-22 10:00 - 12:00 | PCC Rock Creek Campus, Bldg. 4, Room 103, Building 4, 17705 NW Springville Rd, Portland, OR, 97229, United States
FREE. Registration NOT required.
This class will cover the needs of mason bees and how to attract them to your area. Various nesting devices will be presented and discussed.
*Class approved for 1 hour Continuing Education credit for MG Perennials

CANCELLED *PRUNING PERENNIALS
2025-02-15 10:00 - 12:00 | The Gazebo, WCMGA Learning Garden at Jenkins Estate, 8005 SW Grabhorn Rd, Beaverton, OR, 97007, United States
FREE. Registration NOT required.
In this class we’ll discuss and demonstrate pruning of various landscape perennials. We’ll start with general guidelines – when to prune, what to prune, and the proper use of pruning tools. Pruning specifics will be covered for a variety of Clematis, Hydrangeas, Roses and more, all of which are grown in the Companion Planting Garden within the Learning Garden at Jenkins Estate.
*Class approved for 1 hour Continuing Education credit for MG Perennials

Houseplant Sale!
2025-02-08 10:00 - 13:00 | OR
Don’t miss out on our Houseplants Sale! From lush ferns to vibrant succulents and flowering begonias – you’ll be sure to find your green companion here, mostly in $1-$10 range.
The sale is held at The Greenhouse, PCC Rock Creek Campus, 17705 Springville Rd, Portland, OR (Map to PCC Rock Creek).

Houseplant Sale Flyer (pdf)

*BLUEBERRY CARE
2025-02-08 10:00 - 12:00 | OR
FREE. Registration NOT required.
Blueberries are easy and fun to grow. Learn about planting, fertilizing, plant selection and care for blueberries, including pruning techniques. Bring your own hand pruners and garden gloves for some hands-on opportunity to prune.
Class will start indoors followed by a short walk outdoors to the PCC RC Learning Garden. Dress accordingly.
*Class approved for 1 hour Continuing Education credit for MG Perennials

LEARNING TO GROW AGAIN: OBSERVING, LISTENING, PLANNING
2025-02-04 19:00 - 20:00 | Master Gardener Webinar
FREE. Click here to register for webinar
Dr. Madsen will briefly share what she has learned during her first year as statewide program manager for the OSU Extension Master Gardener Volunteer Program—and how that knowledge and understanding are shaping her vision and plans for the program. The second part of her talk will be highly interactive, with opportunities for volunteers to influence the direction of the program in 2025 and beyond. She’s eager to hear your thoughts and ideas!

*MASON BEES 101
2025-01-25 10:00 - 12:00 | PCC Rock Creek Campus, Bldg. 4, Room 103, Building 4, 17705 NW Springville Rd, Portland, OR, 97229, United States
This class covers the identification and natural history of mason bees. Attendees will gain a solid understanding of the characteristics and activities of mason bees and why they are one of the earliest and best pollinators in our area.
*Class approved for 1 hour Continuing Education credit for MG Perennials
