Introducing PHS Digital Classroom
online garden learning series

Pacific Horticulture Society’s FREE online learning series to connect gardeners with some of the most intriguing horticultural and environmental issues of our time. Do you want to begin “gardening like the Earth depends on it”?  Tuning into these conversations is a great way to start.  

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Gardeners as Superheroes

With Pamela Berstler, PHS’s Executive Director, and CEO of G3, Green Gardens Group
Many of us garden for a love of plants, beauty, or to soothe our psyches, but emerging science on the the importance of healthy soil and biodiversity – goals we gardeners strive for –  transforms our solitary garden practice into meaningful and necessary action to combat climate change and heal the planet. Discover how we become true gardening superheroes by following the four steps of the “Watershed Approach.”  Note that internet connectivity issues make the first few minutes of the video choppy; this resolves at 9:00.


How Much Compost is Enough?

With Calla Rose Ostrander, Marin Carbon Project partner and environmental strategic advisor
Applying compost to degraded soils benefits our gardens by sparking a microbial revolution that holds more water in dry times and encourages plant growth. Learn what up-to-date science is saying about carbon sequestration in landscapes and think through the “Goldilocks Question” of how much compost is just right for our gardens.


The Urban Forest is Talking

Coming in June
With Suzanne Simard Lab researchers, University of British Columbia’s Faculty of Forestry
Below the soil surface plants are carrying on complex dialogues with each other. Discover what trees in the urban forest have to say about street tree pruning, tiny hell strips, and separation anxiety from their neighbors to better understand how trees flounder or thrive in built environments. Implications for selecting landscape and street trees abound, as well as best understory shrubs and grasses.


Plants for the Fire Zone and Wildland Interface

Coming in July
With Dr. Alan Shay, Instructor and Site Manager, Oregon State University’s Oak Creek Center for Urban Horticulture and Neil Bell, Community Horticulturalist, Oregon State University Extension Service
As the Pacific Northwest’s weather continues to more closely align with drier Mediterranean climate zones, gardeners must begin shifting their process — from plant selection and garden design to construction and maintenance — in order to ensure successful adaptation of our gardens and continued biodiversity of the region. Learn the best plants and sustainable horticultural solutions for fire zones and wildland interface. Applicable to residential gardens everywhere, whether currently experiencing drought or planning for the future.


This program was made possible thanks to the generous contributions of our donors and a supporting grant from the Pendleton & Elisabeth Carey Miller Charitable Foundation.