Dedicated to the enjoyment, conservation and study of Oregon's native plants and habitats.
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Photo by Susan Berger
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Photo by Susan Berger
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Photo by Mike McKeag
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Welcome to all!

Oregonians live in a state with exceptional natural beauty and diversity that ranges from alpine lava fields to coastal sand dunes.

For over 60 years, members of the Native Plant Society of Oregon have been visiting the wild places of Oregon to enjoy, conserve, and study their natural vegetation. Founded in Portland in 1961, NPSO has grown to a statewide network of 11 Chapters with over 1000 members. We invite you to join us!

Photo by Tanya Harvey

Enjoyment

Engage with other plant enthusiasts to delight in the diversity of Oregon’s 3600+ beautiful and fascinating native plant species.

Photo by Tanya Harvey

Conservation

Join us in our citizen science initiatives, learn to garden with native plants, and advocate with us for protection of species and their ecosystems.

Photo by Tanya Harvey

Study

Learn about Oregon’s diverse flora at our meetings, see them on our guided field trips, and use our resources to increase your knowledge about the plants that grow here.

 
 
 

Our Chapters:

Each of our 11 Chapters are shown on the map. Click on the map to get more information about each Chapter.

Local Chapters hold meetings, field trips and workshops for members and non-members, making available the knowledge and wonder of our native plants to everyone.

All are welcome!

Partial List of Upcoming Events (see our Calendar page for all events):

Chapters:

  •     Cheahmill
  •     Corvallis
  •     Emerald
  •     High Desert
  •     Klamath Falls
  •     Portland
  •     Siskiyou
  •     South Coast
  •     Umpqua Valley
  •     William Cusick
  •     Willamette Valley
  •  
  •     State Events

Initiatives

Photo by Gail Baker & Clay Gautier

Gardening with Natives

We encourage gardeners and landscapers to grow species native to Oregon by providing guidelines and by supporting development of tools that help you select species to meet your native plant gardening goals.

Read more..

Photo by Tanya Harvey

Protecting Rare
Plants

NPSO supports several citizen science projects involving data collection on rare plants including the Adopt a Rare Plant program and the Citizens Rare Plant Watch.

Read more…

Photo by Tanya Harvey

Exploring Oregon’s Plant Diversity

Help contribute to our knowledge of Oregon’s flora by joining our iNaturalist project, Flora of Oregon: Vascular Plants, a collaboration among OSU Herbarium, OregonFlora, and the NPSO. Learn about our project and read more on how to participate, here!

Call to Action

Over 500 of our native plant species are listed as threatened or endangered by the Oregon Biodiversity Information Center. Native plants provide food and support for wildlife that introduced plants cannot. Conserving and preserving species and habitat for all native species, but especially those in danger is a priority for NPSO.

Our current action initiatives can be seen here.

We Need You

Help us protect our natural diversity and ensure we can offer programs to engage everyone in enjoying and valuing our species and their ecosystems. Become a member to join our community of plant enthusiasts and botanists, or donate to one of our initiatives.

Photo by Tanya Harvey

Membership includes

  • a subscription to the NPSO Bulletin
  • access to our Membership Directory
  • privileges to join our Annual Meeting
  • a great way to build your network of plant enthusiasts!
Photo by Tanya Harvey

Give to make an impact

Extra gifts can be made that contribute to any of our six funds, supporting research that furthers our knowledge and protects Oregon’s flora.

Recent News:

NPSO State Secretary Kim Brown Awarded the Botanical Society of America 2025 Service and Advocacy Grant

Last Updated on October 3, 2025 by Tom Pratum Kim Brown, NPSO State Secretary and Portland Chapter member, won the Botanical Society of America’s Advocacy and Service Grant for her proposal on creating accessible and educational native plant gardens. Every year Kim organizes a community “bike-planting” event in Portland called the Beecycle. Beecycle seeks to boost…
Read More NPSO State Secretary Kim Brown Awarded the Botanical Society of America 2025 Service and Advocacy Grant

2026 NPSO Annual Meeting

Last Updated on October 3, 2025 by Tom Pratum Save the Date!2026 NPSO Annual Meeting May 29 to 31 Mark your calendar! The Willamette Valley Chapter is delighted to host the next NPSO statewide Annual Meeting May 29-31, 2026, at the Willamette Heritage Center in Salem, Oregon.  Schedule Overview:Friday, May 29: Participants will be able…
Read More 2026 NPSO Annual Meeting