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Rain garden schematic showing the features of a rain garden.

Are you wondering about rain gardens?

Welcome to Washington State University Extension’s rain garden website. This site provides everything you need to know about rain gardens; from the basics of how they work to building your own — AND where to get more help if you need it.

Washington Rain Garden News

Rain Gardens’ turn backyards into water treatment facilities, benefiting marine life.  South Seattle Emerald, Seattle, WA. 5/21/21.

Inspirational Ideas for Designing a Rain Garden. Treehugger, Online. 5/13/21

Installing a rain garden? You could be eligible for a rebate. Seattle Times, Seattle, WA. 5/5/21.

Building a beautiful backyard: Rain gardens can add natural beauty while being sustainable The Reflector, Battle Ground. WA, 5/11/21.

Rain Garden Events and Locations

Join your neighbors around the Salish Sea. Learn about events and rain gardens in your area visit the 12000 Rain Gardens website and click on the interactive map.

Free Rain Garden Poster

We are pleased to offer this beautiful 2-sided poster for you to download. Total size is 25″ x 19″. The front is full-color and the back is black and white. For a high resolution file (92.5MB-very large) suitable for printing please contact us via email. Click here for a low resolution downloadable copy of the poster suitable for creating flyers.

Copyright Good Nature Publishing 2016 artwork by John C. PitcherRain Garden illustration available for free download.

Rain Garden poster - back with detailed text about rain gardens

This WSU Extension web sites provide links to external sites for the convenience of users. These external sites are not managed by the WSU Extension. Furthermore, WSU Extension does not review, control or take responsibility for the content of these sites, nor do these sites implicitly or explicitly represent official positions and policies of WSU Extension.

Learn online!

Wondering if your rain garden is working properly? Give it a checkup with the new assessment protocol co-created by Stewardship Partners and WSU. The  team at World Relief Seattle has made the protocol easier to use and understand with this great instructional video. (16 min.)

Watch Building a Rain Garden in the City and learn why, where and how to build a rain garden. (Under 5 min.)

The 2021 Green Infrastructure Summit of the Salish Sea  was held virtually. Presentations are posted online.

Learn more about water quality at WSU Extension’s website: Washington’s Water.

Do you live on the shoreline in Washington? Become a Shore Steward

Salish Sea Ecosystem Conference.  The 2020 Conference was held online. Many of the presentations are posted. The next conference will be in April 2022.

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12000 Rain garden logo link

Master Gardener Program logo link to

Washington Stormwater Center logo link to