State & Chapter Events

Updated 2 May 2022

Click a chapter name, or scroll the entire list.

State Cheahmill Corvallis Emerald
High Desert Klamath Basin Portland Siskiyou
Umpqua Valley Willamette Valley William Cusick


The next NPSO state board meeting will be Saturday, May 21st at 10:00 am via Zoom.


For questions, or to be added to the Cheahmill Chapter's email list for reminders of upcoming programs and events, please contact the Cheahmill Chapter President, Lisa Blackburn, at

Check out our Facebook page at


For questions, information on upcoming events, or to be on the Corvallis chapter e-mail list, contact Find us on Facebook at
Saturday, May 7th, 10:00 am – 12:00 pm
Field Trip: Woodpecker Loop Trail at Finley National Wildlife Refuge for Natural Areas Celebration Week.
Leader: Ester McEvoy
Meet at the Woodpecker Loop parking lot (44.4123339, -123.3311692). We will do a gentle hike through woodlands and prairie habitats. We should be able to see Calochortus tolmeii in bloom and many other early spring flowers. For more information, contact Esther at 541-990-0948 or
Monday, May 9th, 7:30 pm - 9:00 pm
In-person Meeting: Wildfire and Plants in the Sierra Nevada
Presenter: Harold Zald
Come join the Corvallis Chapter for our first in-person meeting since March of 2020. The meeting will be held at Avery House Nature Center (1200 SW Avery Park Dr, Corvallis, OR 97333) in Avery Park. There is additional parking on SW Avery Park Road by the Lions Shelter).
Our speaker will be Dr. Harold Zald, Research Forester with the Forest Service Pacific Northwest Research Station. Harold is involved with vegetation monitoring and remote sensing. Harold’s talk will address aspects of fire effects on vegetation in the Sierra Nevada of California. Masks are welcome but not required.
Saturday, May 21st, 10:00 am to 12:00 pm
Event: Work Party at the Avery Native Plant Garden Located at Avery House, Avery Park, Corvallis. We will work on barking the paths which means moving piles of bark mulch so come prepared with shovels and energy. Please bring water and gloves. Contact Esther for more information at 541-990-0948 or


Visit the Emerald Chapter website at to learn more about the latest chapter events, plant lists and botanical information about Lane County plants and the people who love them. Our Facebook page is

Wednesday, May 4th, 1:00 pm – 2:00 pm
Field Trip: Laurelwood Bog
Leader: Hugh Prichard
The Laurelwood Bog is a native plant restoration project in its eleventh year, located on the northwest corner of Laurelwood Golf Course. Hugh Prichard, co-owner with the city of Eugene, has planted 147 species of native plants, many of which are in full bloom. Hugh has offered to lead us on a guided tour to explain the transformation from weedy hillside to native plant demonstration area. The best access for this tour is through the front garden at 2671 Emerald Street, in Eugene. Please park on the street and walk down the circular gravel drive. We’ll meet in the carport which also serves as an antique sign museum. Paths are well-barked; there is no need for waterproof boots but the ground can be uneven. Sign up here.
Sunday, May 15th, 10:00 am – 5:00 pm
Special Event: Mt. Pisgah Arboretum Wildflower Festival Festival activities include an expansive wildflower display inside the White Oak Pavilion, live music, guided nature walks by local naturalists, local food, arts and crafts vendors, and the Art in Nature Trail. Mt. Pisgah Arboretum is located at 34901 Frank Parrish Road, Eugene. Emerald Chapter is a co-sponsor of this festival. Tickets are available here.
Wednesday, May 18th, 5:00 pm – 7:30 pm
Field Trip: Dorris Ranch Weekday Walk
Leaders: Dave Predeek and Fraser McDonald
Amble along the Willamette Middle Fork Trail for a short distance and then tour the replanted hazelnut orchards with Fraser McDonald of Willamalane Park and Recreation District. We will cover about three miles over relatively flat ground. Dress for the weather. Wear adequate walking shoes. Bring drinking water. No sign-up needed.
Friday, May 20th, 7:30 pm - 9:30 pm
Zoom Program: Siskiyou Plant Communities
Presenter: Lauren Hallett
Serpentine systems, like those found in the Klamath-Siskiyous of Southwest Oregon, host rich plant communities with a high degree of endemicity. Lauren Hallett, assistant professor in the Institute of Ecology and Evolution at the University of Oregon, will discuss the unique management challenges facing serpentine ecosystems in the context of global change.
This talk is co-sponsored with Eugene Natural History Society. ZOOM LINK.
Saturday, May 21st, 1:00 pm – 2:00 pm
Field Trip: Museum of Natural and Cultural History Native Plant Garden
Leaders: Emerald Chapter Members
The property surrounding this museum, on the University of Oregon campus, bears an excellent native plant garden that is little known to the community. In partnership with the museum, Emerald Chapter members will be leading this short walk in and around the museum's Glenn Starlin Native Plant Courtyard. With over forty species, the courtyard offers a rich array of plant life that have provided nutrition and material for tools, shelter, and more for millennia. This is the first of a monthly series of walks at this location. Limited free parking is in a designated lot located just west of the mammoths on East 15th Avenue, and metered parking is available on the street. The address is 1680 East 15th Avenue on the University of Oregon campus in Eugene. Sign-up is not needed, and the tour is free to NPSO members.
Saturday, June 4th, 9:00 am – 5:00 pm
Field Trip: Konnie Memorial Park in Swisshome
Leader: Ed Alverson
Konnie Memorial Park is in the heart of the Coast Range near Swisshome. This 145-acre park is located along the lower reaches of Lake Creek just above its confluence with the Siuslaw River. The park supports coastal rain forest communities as well as interesting habitats along rock outcrops and open riverbanks. Meet at South Eugene High School (parking lot corner of 19th and Patterson) at 9:00 am to carpool for this all day trip. Bring lunch and water and be prepared for off-trail walking. Sign up here.
Saturday, June 18th, 9:00 am – 12:00 pm
Field Trip: Coyote Prairie
Leader: Diane Steeck
Visit the west Eugene wetlands in the height of bloom and look for rare birds and butterflies too. Diane was our speaker in February and highlighted many parks within city of Eugene limits. This is one of Diane's favorite wetland prairie restoration sites, and she's looking forward to sharing this special place with us. Meet at South Eugene High School parking lot (19th and Patterson) at 9:00 am to carpool. Wear hiking boots (clean - no weed seeds), and bring water, snacks and appropriate clothing for the weather. There is no trail at the site, so be prepared for uneven ground. We should be done with the trip by noon. Sign up here.
Saturday, June 25th, 9:00 am – 5:00 pm
Field Trip: Bristow Prairie
Leader: Tanya Harvey
Bristow Prairie is an area of great diversity in the Calapooya Mountains. The little-used High Divide trail runs south through old-growth forest, meadows, and wetlands, and crosses a gorgeous south-facing rocky slope before reaching Bristow Prairie. The rocky slope is filled with colorful flowers in June and July. Depending upon the conditions and what is in bloom, we may follow the trail or we may start at the prairie and wander over to the rock garden area after looking at the multitude of interesting plants growing along the roadside. Meet at South Eugene High School parking lot (19th and Patterson) at 9:00 am to carpool. Bring lunch and water and be prepared for off-trail walking. For more information, including trip reports and a plant list, visit this web site. Sign up here.

High Desert

For information or to sign up for hikes, visit the High Desert Chapter website, Facebook page: 'Native Plant Society of Oregon: High Desert Chapter', or email
Saturday, May 21st, 9:30 am – 3:00 pm
Field Trip: Ochoco Scablands Field Trip
Leader: Jill Welborn, botanist, formerly with the Ochoco National Forest
Visit the Ochoco scablands south of Big Summit Prairie for a trip featuring spring wildflowers and native plants. The scablands are a unique, shallow-soiled habitat that sport an array of colorful spring flowers and are home to rare, endemic plants such as Henderson’s needle grass and Ochoco lomatium.
Participants should bring lunch and sturdy shoes and be prepared for short hikes on rough, rocky ground and to encounter unpredictable spring weather conditions. Children and families welcome!
To sign up, send an email to with "Ochoco Scablands" in the subject line. Exact meeting location will be provided after signing up.

Klamath Basin

For information, visit the Klamath Basin Chapter website: or find us on Facebook: facebook Klamath-Basin- Chapter-Native-Plant-Society-of-Oregon.


Our members receive The Calochortus, our monthly e-newsletter with field trips, programs, news, and events for the Portland area. If you are not receiving it, check your spam folder and notify us at of any email address change. You'll also find our monthly programs and additional field trips posted on our Meetup page at

Our Facebook page is regularly updated with current wildflower bloom status and photos; visit Visit our chapter website at for archived newsletters, program recordings, and merchandise in our Shop.

Our monthly programs are now “virtual. Members will find a link to register for our second Thursday Zoom presentations in each issue of the state Bulletin and The Calochortus.
Month of April and May
Event: Portland Chapter’s i Naturalist NPSO PDX April 2022 Native Plant Appreciation Month Bioblitz!
Organizers: Lecia Schall and Dave Anderson
What's a Bioblitz? It's an event that focuses on identifying as many species as possible in a specific area over a short period of time.

NPSO Portland Chapter presents its second annual iNaturalist Bioblitz as a Native Plant Appreciation Month opportunity to enjoy and protect Pacific Northwest natives. Help us document the existence and phenology (life stage) of native plants in the greater Portland area AND the Columbia River Gorge during the months of April and May. If you haven't already, please download the iNaturalist app, available for iPhone or Android, and at iNaturalist.

Anyone can add observations. Look for "NPSO PDX Native Plant Appreciation Month April 2022 BioBlitz" under "Projects". After joining the project, just upload your observations to iNaturalist. They will automatically be included in our BioBlitz. Please help us by identifying observations by others, as well. We will collate observations and watch for rare or sensitive species.
Sunday, May 8th, 1:00 pm - 3:00 pm
Event: Mother's Day Family Event
Leader: Willow Elliott
Join Portland Chapter president Willow Elliott in celebrating Mother's Day with a walk back in time across a historic property once owned by pioneer botanist Thomas Howell. We'll meet near the Bybee-Howell House, oldest home on Sauvie Island and then stroll through heritage apple trees, a white oak savannah, wetland, and meadows where we'll see the re-introduced golden paintbrush, Castilleja levisecta), and much more. Sauvie Island has the largest community of this rare paintbrush on the west coast. Bring a picnic to have after the walk! Registration is not necessary. Dogs are not permitted on Metro property or in cars. Meet at the arbor entrance to the Bybee-Howell House Pioneer Orchard, 13901 NW Howell Park Road, Sauvie Island, ten miles north of Portland off Highway 30.
For more information or questions contact Willow at
Thursday, May 12th, 7:00 pm - 8:30 pm
Program: In Search of the Wild Rhododendron
Presenters: Dave Andersen and Andrew Stern
Dave and Andrew have been exploring the Cascades of northern Oregon and southern Washington in search of wild Rhododendrons since 2017. They have developed a particular interest in how these plants fared in areas affected by wildfire and have documented in photos and on iNaturalist how other plants, wildlife, and insects exist in association with these Rhododendron species.

Register in advance for this meeting:

After registering, you will receive a confirmation email with a link to join the meeting. Save the email.
Saturday, May 14th, 11:00 am - 3:00 pm
Field Trip: Native Plant Open Garden
Sponsor: Lynne Dutillio
Join us at the Vancouver Washington home of NPSO member Lynne Dutillio whose unique garden hosts over 100 species of native plants. This Plantzy Gardens and Designs project features a mountain rock garden, meadowy low moist areas and hills, rain garden, bee pond, and prairie meadow. NPSO member Zak Weinstein, owner of Plantzy, will be there with other NPSO volunteers to answer questions. Come and learn some new native plant species and get inspiration for your own native garden project. For location and directions, register at
Thursday, June 9th, 7:00 pm - 8:30 pm
Program: Good Fire: Revitalizing Indigenous Burning from the Salish Sea to the Sierra Nevada
Presenter: Chris Adlam
Dr. Chris Adlam, Oregon State University Extension Fire Specialist for Southwest Oregon, will discuss efforts to restore the use of Indigenous cultural burning practices to prairies and forests of the West Coast. He helps communities live well with fire through a greater understanding of its ecological role and diverse management options.

Register in advance for this meeting:

After registering, you will receive a confirmation email with a link to join the meeting. SAVE IT.


To join the Siskiyou Chapter email list: Send an email, from the address at which you want to receive announcements, to announce‐ No subject or message is required. You will get a confirmation email. If you would like to volunteer to lead a hike in 2018, make a suggestion, or provide feedback regarding the field trip program, please contact Katelyn Detweiler, Join us on Facebook at:

The Siskiyou Chapter has a YouTube channel, check it out at

Program/Meeting: The next Siskiyou Chapter meeting will be in September. Programs run from September through May.
Sunday, May 29th, 9am
Field Trip: Dunlop Meadow
Leader: Wayne Rolle
The destination is Dunlop Meadow in the Southern Oregon Cascades followed by hiking a primitive trail through older forest to South Fork Little Butte Creek. Driving time is around 1 hour each way on Forest Service gravel roads. Hiking distance and difficulty is easy for the meadow visit and moderate for those that continue the hike down to the creek. Meet to carpool at Ashland’s Bi-Mart parking lot at 9am. Dunlop Meadow has both wetland and upland flora. It is a very scenic natural meadow with scattered large ponderosa pines and was used briefly as a homestead in the early 20th century. Besides meadow grasses and wildflowers, the trail through the forest will have calypso orchids, trilliums, and perhaps some spring fungi. For further information or to RSVP, contact the field trip coordinator at or 215 872-6365.
Sunday, June 18th, 10am – 3pm (DATE CHANGED TO JUNE)
Field Trip: Serpentine Biodiversity of Bolt Mountain
Leader: Katelyn Detweiler
Hike up the ancient peridotite of Bolt Mountain as we look for spring wildflowers. The trail rises on a steady slope, 3.2 miles each direction. We will travel through Jeffery pine, buckbrush, and manzanita mixed forest to open grassy slopes, and eventually reach oak and madrone before reaching the rocky serpentine summit. The top boasts views of the Siskiyous, east to Grants Pass, and south over the Applegate to Mount Ashland. Meet at 10am at the Entrance to Fish Hatchery Park. There is a $5 entrance fee to park at the trailhead. For further information or to RSVP, contact the field trip coordinator at or 215 872-6365.
July 4th Wildflower Show Volunteers Needed The Siskiyou Chapter is seeking volunteers to help with our wildflower show in Ashland. On July 3rd, we are seeking plant collectors (morning to afternoon), help with set-up and plant identification (late afternoon to evening). Evening helpers are rewarded with pizza and beverages. During the wildflower show on July 4th, we’re seeking volunteers to staff the free community show and help with break-down. For more info or to sign up to volunteer, please contact Pete at
July 4, 10 am-4 pm
Event: Irene Hollenbeck Memorial Wildflower Show This Wildflower Show in Ashland features over 300 species of native flowers from the volcanic Cascades, the much older Siskiyous, and the valleys in between. Free admission. Location: Pioneer Hall, 73 Winburn Way (a new location across from Lithia Park in Ashland). Coordinated by the Siskiyou Chapter, NPSO. Come meet some of our beautiful mountain flowers!

Umpqua Valley

Visit for more information on chapter activities or to be added to our email list. Check out our Facebook page, Not online? Call Donna Rawson 541-643-0364.

Willamette Valley

For program information, contact John Savage at 503-799-5414,
Saturday, May 7th, 1:00 pm – 2:00 pm
Sunday, May 8th, 10:00 am - 11:00 am and 12:00 pm – 1:00 pm
Field Trip: Silver Falls State Park
Leader: John Savage
As part of the Silver Falls State Park Mother’s Day Birding and Wildflower Festival, John Savage will lead three one-hour wildflower walks along the rim near the South Falls. Meeting place for all walks is the South Falls Stone Circle. Free and open to the public.
Saturday, May 14th, 10:00 am – 1:00 pm
Field Trip: Kingston Prairie Preserve
Leaders: Willamette Valley Chapter of the NPSO
Join members of the Willamette Valley Chapter of the NPSO on an easy walk to view the blooming wildflowers at the Kingston Prairie Preserve southeast of Stayton. The 152-acre preserve is the best example of native prairie remaining in the Central Willamette Valley. Bring water, snack, and sturdy walking shoes. Registration is required. To register and for more information, please contact John Savage at

William Cusick

Chapter notices and communications are done primarily through a Google group. For more information or to be added to the Google group, please contact Susan Geer at 541-963-0477 or Our website is not currently functional.
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