Washington State University Extension

Rain Gardens

Rain garden schematic

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.

Here’s a Rain Garden Riddle: Vegetable gardens produce vegetables. Flower gardens grow flowers. But what do rain gardens produce?

Answer:  Not more rain! A rain garden is a landscaping feature that produces clean water by filtering polluted runoff. Rain gardens are popping up in backyards and neighborhoods all across the Puget Sound region.

Want to learn more? Click on the links and dig in.

Visit your County Extension office for events in your area.


How does your rain garden grow? Best plants for the Pacific Northwest

In a green movement sweeping the Pacific Northwest, rain gardens are being installed with the know-how gained by researchers at Washington State University. Which plants are suitable for a rain garden? By experimenting on 16 rain gardens at WSU Puyallup’s Research and Extension Center south of Seattle, horticulturist Rita Hummel has figured it out.

Click Here for the list of recommended plants.

To learn more view the June 21, 2016 news release.

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 suitable for creating flyers.

Copyright Good Nature Publishing 2016 artwork by John C. Pitcher

Rain Garden poster

Rain Garden poster - back

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.

Visit our partners


12000 Rain garden logo link


Master Gardne Program logo link

Washington Stormwater Center logo link

Rain Gardens, 2606 W Pioneer, Puyallup, WA  98371, Contact Us
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