Grow smarter, thrive greener
Green School
Pacific Northwest horticulture courses from WSU Extension
Turn your passion into expertise when you earn a Washington Gardener Certificate
Discover how the Washington Gardener Certificate can enrich your gardening journey! Whether you’re a passionate home gardener, a teacher inspiring students, a professional looking to boost your resume, a green industry expert seeking sustainable solutions, or an active garden club member, this certificate equips you with science-backed knowledge to grow, lead, and thrive.
Registration will open August 17 – September 30, 2026.
I’m happy to share that I completed the final exam with a passing grade —thank you so much for your support. I truly appreciate the additional time, as well as the thoughtful effort you and the team put into developing such high-quality training materials. It made a meaningful difference. Horticulture is an incredibly rich field with endless opportunities to learn, and I’m grateful to have taken this first step. Thank you again!
Mary Ann (Class of 2026)
Cultivate your love of gardening
Unlock the secrets to successful gardening at Green School! Whether you’re looking to improve your garden, adapt to changing climates, or deepen your horticultural knowledge, this program equips you with practical skills to thrive.
Led by expert instructors, the Washington Gardener Certificate course offers flexible online modules and live Zoom sessions covering 28 essential gardening topics—from botany and plant identification to soil health and pest management. Over 20 weeks, you’ll gain the confidence to create and maintain a resilient, thriving garden tailored to the Pacific Northwest’s unique growing conditions.
Advance your career and make a lasting impact
Expand your gardening expertise—anytime, anywhere—at Green School!
Earn the Washington Gardener Certificate and showcase your ability to apply science-backed techniques that reduce environmental impact, conserve resources, and create resilient ecosystems—essential skills for today’s green industry.
Whether you’re advancing your career or deepening your gardening knowledge, this program offers professional-level training designed to make a lasting impact.
Grow your future
The Washington Gardener Certificate course is a great opportunity for high school students to explore gardening, environmental stewardship, and digital learning — all at your own pace. It’s a flexible, online course that helps build practical skills, supports career and college readiness, and connects you with real-world sustainability efforts across Washington.
Whether you’re passionate about plants, curious about science, or looking to make a positive impact, this certificate is a great way to dig in and grow!
Garden club members—unlock the secrets to thriving landscapes
Immerse yourself in the art of sustainable gardening with expert guidance! the Washington Gardener Certificate course offers science-backed techniques in soil health, water conservation, pollinator protection, and climate-conscious gardening—helping you create lush, resilient landscapes that support biodiversity.
Earn the Washington Gardener Certificate and showcase your dedication to eco-friendly gardening. Whether you’re looking to hone your skills, enrich your garden club experience, or connect with fellow enthusiasts, this program provides the knowledge and inspiration to help you grow and thrive!
Empower your students, transform the future
Reinforce your commitment to environmental education and equip young learners with the skills to care for the planet and champion sustainability.
Earn your Washington Gardener Certificate at Green School and gain science‑backed gardening and sustainability expertise—then empower your students to become environmental stewards. This fully online course gives educators practical tools to integrate sustainability, climate resilience, and pollinator health into their curriculum.
By learning hands‑on strategies in landscaping, soil health, and conservation, you’ll be ready to guide students as they explore real‑world environmental challenges such as climate change and biodiversity loss, and help them develop solutions for a greener future.
Grow your business with science-backed sustainability
Stay ahead in the green industry by integrating sustainable practices that benefit both the environment and your business. The WSU Extension Green School Washington Gardener Certificate course provides science-backed strategies to enhance expertise, refine sustainability approaches, and implement eco-conscious solutions that drive success.
Whether you work in landscaping, agriculture, horticulture, urban planning, or environmental consulting, this program equips you with research-based techniques to improve soil health, conserve water, support biodiversity, and build climate-resilient landscapes. These skills translate into practical advantages for businesses, clients, and communities alike.
Earn the Washington Gardener Certificate to validate your expertise in sustainable gardening and environmental stewardship. Stand out in the industry by offering eco‑conscious solutions, improving efficiency, and staying ahead of emerging trends. Investing in this course means investing in the future of your business—and a greener world.
Grow, give, and make a difference—volunteer with the WSU Extension Master Gardener Program!
Passionate about gardening and eager to make a difference? Apply to join the WSU Extension Master Gardener program! No experience needed—just a love for learning and a desire to give back. As a volunteer, you’ll earn the Washington Gardener Certificate, gain science‑backed gardening skills, connect with like‑minded individuals, and help educate communities on sustainability, climate resilience, and local food access.
Become part of a network of university‑trained educators dedicated to environmental stewardship. Whether you’re new to gardening or a seasoned grower, your contributions will help create a greener, more resilient future.