Online Continuing Education

MGs continue education for lifeWhat counts as continuing education (CE)?

Classes that will improve a volunteer’s knowledge and skill base for performing work as a horticulture adviser and serving as a resource on issues of sustainable gardening for home gardeners. MGs are trained to carry out the mission of WSU Extension and its community horticulture programs, and their purpose is to educate. Education that counts as continuing education includes classes, seminars, lectures offered by accredited institutions/horticulture organizations including webinars and online workshops. 

Two series of classes are offered online for King County Master Gardeners and also to the public. Detail about these are found on our Education page:

  • 2022 Online Growing Groceries series
  • 2022 Online BDG Saturday Workshops

Below is the list of online continuing education for Master Gardeners. Some are available from Oregon State University and the Cooperative Extension System as webinars, and some are relevant to home gardening and some are relevant to the Pacific Northwest. The webinars listed below are offered on demand and without charge. Additional recordings are available by using the Advanced Search on the eXtension website,

The hotlinks listed below will take you to a selection of webinars that are relevant and will qualify as CE. The list of videos are sorted by broad topics and year, so view the full list to find topics of interest to you. As you watch the webinar, reflect on how the topic presented relates to the questions from clients and how the information will influence your answers.


2018 ‘First Look’: OSU Research on Native Plants in the PNW Garden:

2018 Hybridization and Tetraploids and Chromosomes, Oh My! Understanding Plant Breeding for Disease Resistance:

2019 What can a leaf bud tell us about environmental change? Citizen Science, Master Gardeners and Nature’s Notebook:

2020 Benefits Of Using Cover Crops:

Bees, Pollinators

2017 Never doubt how a small, thoughtful and committed pollinator habitat (in your garden) can change the world:

2018 The latest research on bees in the garden: Results from the Oregon State University Garden Ecology Lab:

2019 “First Look” Reading a Pesticide Label to Protect Bees:

2020 WSU: Pollination and Protecting Pollinators: [52 minutes]

Vegetables, Edible Plants

2018 Practical Food Safety in the Garden:

2019 Adapting Dry Farming Techniques to Vegetable Gardens:

2019 Demystifying Grafted Tomatoes: The Why & How for Gardeners:

2019 Succession Planting: Growing Crops for Continual Harvest:

2020 Companion Planting For Vegetables:

2020 Companion Planting For Vegetables II:

Pest Management in the Landscape

2017 Organic Pesticides for Home Gardens:

2018 All Bugs Good and Bad Webinar Series: Bees, Wasps, and Hornets, Oh my!:

2018 Dealing with Darling Dastardly Deer:

2018 Frontiers in Slug & Snail Management

2018 Identifying & Managing the Bronze Birch Borer (recording, resources):

2018 Meet the New Neighbors: Emerging Insect Pests in Oregon

2019 Asian Jumping Worms: A Threat to Oregon Landscapes:

2019 Project Happy Apples: Reducing codling moth damage in backyard orchards:

2020 Dueling with Diggers: Gophers, Moles, Voles and Ground Squirrels:

2020 Early Summer Pest Issues:

2020 Oh Rats! Dealing with non-native rodents in the garden:

2020 WSU Landscape Maintenance: Healthy Plants While Minimizing Pesticides: [46 minutes]

Added 2021: WSU 2012 Homeowner’s Guide to Integrated Pest Management: [23 minutes]

2021 WSU Pruning as an IPM Tool: : The importance of knowing the biology of the plants being pruned and using pruning to prevent insect and disease problems in the maritime PNW. [40 minutes]

Plant Disease Management

2018 Powdery Mildew: Biology and Management in the Garden:

2019 Are Viruses Lurking in Your Backyard Cherries?

2019 Update on Sudden Oak Death in the Pacific Northwest:

2020 From the 2020 WSU Extension King County Master Gardener Training Series: Plant Pathology & Plant Problem Diagnosis Presenter: Rachel Bomberger, WSU Department of Plant Pathology


Updated January 2022

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