The Evergreen Thumb

In this episode of The Evergreen Thumb, host Erin Hoover interviews Deirdre Griffin-LaHue, an expert in soil health, about the importance of soil structure in gardening. They discuss how soil structure—how mineral particles and organic matter form aggregates—affects water retention, air flow, and plant health. Deirdre explains the difference between soil texture and soil structure. Key tips includ...

In part nine of our Program Priority Series, guest Laurel Moulton is back to go over clean water. In this episode, Laurel covers: What the clean water program priority is about How our everyday gardening practices impact water quality Gardening and landscape choices to protect clean water Clean water and Integrated Pest Management  Key aspects of Integrated Pest Management  How Integrated Pest Man...

In this episode of The Evergreen Thumb , guest Todd Murray joins host Erin Hoover to discuss how climate change is affecting garden pests. He explains that "pests" are defined by their interactions with humans and tend to thrive in disturbed environments, often reproducing rapidly. Climate change, especially shifting rainfall patterns and warmer temperatures, is stressing plants, making them more...

Healthy soil is the foundation of every thriving garden. 🌱 In this episode of  The Evergreen Thumb , Erin explores the key principles of soil health and how gardeners can apply them to create  resilient, productive soil at home . What you'll discover in this episode: The core principles of soil health and why they matter for your garden How to keep soil covered, reduce disturbance, and maintain l...

Soil is a living and dynamic resource. It provides critical services essential for life, including food production, shelter, and water filtration. It supports plant growth, serves as a habitat for countless organisms and even supplies antibiotics. Humans depend on soil for waste management, water purification, and as a foundation for infrastructure. In part eight of our Program Priority Series, gu...

In this episode of The Evergreen Thumb, guest Karen Wright from the Washington State Department of Agriculture tells us all about the Washington Bee Atlas and the importance of native bees. Karen explains the difference between honey bees and native bees. She talks about how Washington state has around 600 known native bee species, with many more still undescribed, and goes over how native bees ar...

Wildfires are becoming more frequent and more intense—especially in areas where homes and wildlands meet. But your garden can be part of the solution. In this episode, I talk with Al Murphy, a national wildfire management expert and WSU Master Gardener, about how home gardeners can take simple, effective steps to reduce wildfire risk around their homes. Learn what it means to have a fire-ready gar...

In this episode of The Evergreen Thumb , we're joined by Jim Kropf, WSU Pierce County Extension Director, to explore how thoughtful plant choices can help protect your home and garden from wildfire. With fire seasons growing longer and hotter across Washington, understanding which plants are more fire-resistant—and how to maintain them—is essential for creating a safer, more resilient landscape. J...

What does a truly waterwise garden look like in Washington, and why does it matter more than ever? In this episode, we're joined by Spokane County Master Gardener Mason Neil to explore how home gardeners can make practical, research-based choices that reduce outdoor water use while creating beautiful, resilient landscapes. From choosing drought-tolerant plants to using more efficient irrigation, M...

💧 Are you overwatering your garden? You're not alone! In our newest episode of The Evergreen Thumb, WSU horticulturist Austin Little shares easy, efficient watering strategies to help your garden thrive—without wasting water. 🌿 Learn about: • How to water less but grow more • Mulch and soil tips to retain moisture Resources mentioned in this episode, along with a full transcript, can be found on...

Pollinators play a critical role in food production, plant biodiversity, and ecosystem health—but many of these essential species are facing serious threats. In this episode of  The Evergreen Thumb , we sit down with a WSU Master Gardener and Certified Pollinator Steward to explore why pollinators matter, what's putting them at risk, and how you can take simple, effective steps to support them in...

In this episode of The Evergreen Thumb , we're joined by Jennifer Marquis, Statewide Program Leader for the WSU Extension Master Gardener Program, to talk about the exciting launch of the Washington State University Extension Green School . Designed to deepen gardeners' knowledge and environmental stewardship, the Green School offers flexible, research-based education through two tracks: the  Wash...

Get a first look at what's in store for the 2025 WSU Master Gardener Advanced Education Conference! Host Erin chats with the AEC Committee Chair and the Educational Outreach Program Lead about this year's theme, keynote speakers, exciting workshops, and how gardeners of all backgrounds can get involved. Whether you're a certified Master Gardener or a passionate plant lover, this episode highlights...

In this episode, we explore the WSU Extension Master Gardener Program's Local Food priority—and how growing food close to home can lead to healthier individuals, stronger communities, and a more resilient environment. I break down how local food connects to sustainable gardening, food access, and community empowerment. Whether you're growing in a backyard, a balcony, or a community garden, discove...

Want to keep your forested property healthy and thriving? In this episode, we chat with Sarah Stewart from WSU Forestry about backyard forest stewardship —covering best practices for managing small woodlands, improving tree health, enhancing wildlife habitat, and building resilience to climate change.   Whether you have a few trees or several acres, this episode is packed with expert insights to h...

A healthy garden is more than just beautiful—it's biodiverse! In this episode of The Evergreen Thumb , we explore how increasing plant diversity in home gardens, community spaces, and public landscapes can create more resilient ecosystems, healthier soil, and stronger pollinator populations . Join us as we discuss: Why biodiversity is essential for sustainable gardening How native plants and layer...

In this episode of The Evergreen Thumb Oregon State University Extension's Wildlife Specialist, Dr. Dana Sanchez, joins host Erin Hoover to discuss strategies for managing wildlife pests (a.k.a. vertebrate pests), in your garden and surrounding areas.   For resources, links, a transcript, and more be sure to visit our website at https://evergreenthumb.mastergardenerfoundation.org/episode044/  

From stress reduction to faster healing times after surgery, being in nearby nature has measurable effects on our well being. Master Gardeners work to foster the connection between people and the natural world to help our communities be able to access nature no matter where they live. In part two of our Program Priority Series we sit down with Master Gardener Cathi Lamoreux to discuss Nearby Natur...

In this episode, we dive into the fascinating world of spiders and their crucial role in garden ecosystems. Learn about common spider species in the Pacific Northwest, including orb-weavers, wolf spiders, and jumping spiders, and how they help gardeners by naturally controlling pest populations. Expert insights help unravel the mysteries of spider behavior, their impact on pollinators, and ways to...

Climate change is reshaping how we garden, from shifting planting zones to increased drought and extreme weather. In this episode, we're joined by Mike Peronto to explore how the WSU Extension Master Gardener Program's Climate Change Priority is helping gardeners adapt. Learn practical, science-backed strategies for building climate resilience, improving soil health, conserving water, and selectin...

In this episode of The Evergreen Thumb , host Erin Hoover speaks with author and gardening educator Lisa Taylor about the joys and benefits of growing perennial edibles in the Pacific Northwest. They explore a variety of crops, from perennial vegetables like asparagus and rhubarb to fruit-bearing trees and shrubs well-suited to the region's climate. Lisa goes over lesser-known edible perennials, h...

In this episode, we dive into the fascinating world of vermicomposting with WSU Extension Master Gardener and Master Composter Recycler Program Coordinator, Jason Adams. Learn how worms transform kitchen scraps into rich, nutrient-dense compost that boosts soil health and supports sustainable gardening. We discuss the basics of starting and maintaining a worm bin, troubleshooting common issues, an...

Discover how gardening nurtures more than just plants—it's a powerful tool for supporting mental wellness as we age. Join Erin as she explores the psychological and emotional benefits of gardening for aging adults with Katie Luna, a WSU doctoral candidate in clinical psychology. For resources, links, a transcript, and more be sure to visit our  website.  

In this episode, guest Theresa Crimmins, director of the USA National Phenology Network , explores the fascinating world of  phenology —nature's way of keeping time. Discover how seasonal changes influence plants, pollinators, and the environment, and learn how you can use phenological cues to enhance your gardening practices. We'll discuss the importance of observing natural patterns and the impa...

In Part 2 of our "Gardening Myths" series, we're busting more common misconceptions about gardening and tree care. Is gravel at the bottom of pots really a good idea? Should trees be planted deeply for stability? What about staking new trees or painting over pruning cuts? We'll also dive into the truth about using wood chip mulch safely in your garden. Tune in for research-based insights and pract...