Arbor Month Events!
OAK WOODLAND RESTORATION
Saturday, April 5th, 10:00 AM – 12:00 PM
Location: Park at 14903 Westlake Drive
Join the Oswego Lake Watershed Council (OLWC) for a morning of land tending and restoration at the Westlake HOA Oak Woodland. This beautiful oak woodland habitat is home to centuries-old Oregon white oaks and a diversity of wildlife. Volunteers will learn about Oregon white oak ecology, land tending, and the cultural value of oak ecosystems, while helping to remove invasive species and plant native plants.
For additional information and free registration, email Rio Hybert at rio@oswegowatershed.org.
LOOKING FOR ROTARY CLUB MEMBERS
Saturday, April 12th, 9:00 AM – 12:00 PM
Are you a Rotary Club member? Join us for this community service opportunity. Stay tuned for more information or contact Rio Hybert at rio@oswegowatershed.org.
ARBORIST WORKSHOP: OAK TREE CARE
Thursday, April 10th, 6:00 PM – 8:00 PM
Location: The Lake Theater, 106 North State Street, Lake Oswego, Oregon
Join us for an evening of learning and discussion on Oregon White Oak trees at The Lake Theater in Lake Oswego! This program is offered by Lake Oswego Watershed Council in cooperation with the Lake Theater & Café. Admission details and registration required (though food and drink purchases are encouraged to offset the cost to the Lake Theater). Doors open at 5:45, the presentation begins at 6:00. Bring the family and any Oak tree questions! Register here.
This session will cover:
- Oak Tree Basics: Types, growth, and habitat needs
- Common Threats: Pests, diseases, and environmental stressors
- Signs of Health Issues: How to spot problems early
- Proper Care: Watering, mulching, and planting near oaks
- Pruning Tips: Structural and reduction pruning for health
- Resilience to Weather: How to protect oaks from storms
- Growing Healthy Oaks: From young saplings to mature trees
- Q&A with Experts: Ask professionals about safe tree care and maintenance
Brian French is the principal at Arboriculture International, a certified arborist, tree worker, and risk assessor with 24+ years of experience in Oregon and internationally. He specializes in wildlife tree retention, habitat programs, and the preservation of significant trees. Brian also coordinates the Oregon Champion Tree Registry and Portland Heritage Tree Program, contributing to arborist research and safer practices worldwide.
Contact Rio Hybert for more information at rio@oswegowatershed.org.
MT. PARK STREAM RESTORATION
Wednesday, April 16th, 9:00 AM – 11:00 PM
Location: Park at Elizabeth Gress Park, Churchill Downs & McNary Pkwy
Join us to restore the common spaces in Mountain Park, home to a diverse forest and wildlife corridor! Volunteers will pull invasive ivy and other species and seed native groundcover. This event is suitable for a variety of mobility levels.
For additional information and free registration, email Rio Hybert at rio@oswegowatershed.org.
OREGON WHITE OAK TREE SURVEY TRAINING
Saturday, April 19th, 10:00 AM – 12:00 PM
Location: East Waluga Park Picnic Shelter, 15505 Quarry Road
Learn to participate in a community science project to survey Oregon white oaks. You’ll be trained to survey trees in your neighborhood, collect data on their size, condition, and overall health, helping inform management decisions.
Pre-registration is required and limited to 30 participants. Register here: Survey Registration.
SOIL YOUR UNDIES FOR SCIENCE
Life beneath the soil is just as essential as the plants above. Join the OLWC’s “Soil Your Undies” challenge to discover the world of soil organisms.
Undies Pick-up Date/Locations:
- Saturday, April 5th: 9:00 AM – 2:00 PM at Tryon Creek State Natural Area during the Trillium Festival
- Sunday, April 6th: 11:00 AM – 2:00 PM at River Grove Elementary during the Lake Oswego Sustainability Fair
- Contact Megan Hill for alternative pick-up locations: megan@oswegowatershed.org.
Undies Bury Date
- Tuesday, April 22nd
Undies Dig-Up Date – take a photo!
- Tuesday, June 24
Undies Online Reveal Event
- Saturday, June 28th, 2025, at 10:00 AM (Log-in link for the Virtual Event)
Participants will also receive biweekly soil health tips. Sign up and join the fun!
MAKE A WISH ON THE WISHING TREE
Sunday, April 21st, 1:00 PM – 3:00 PM
Location: Freepons Park, Parking at 1399 Bickner Street
Make a wish at the famous Wishing Tree as you enter Freepons Park! Then, participate in a Nature Scavenger Hunt highlighting trees, plants, birds, and bugs. A prize will be awarded to those who find everything on the scavenger hunt.
For questions, contact stephanie@natureed.org
OAK WOODLAND ECOLOGY WALK
Saturday, April 26th, 10:00 AM – 11:30 PM
Location: Park at 14903 Westlake Drive
Join us for an oak woodland walking tour to explore native plants, flowers, and birds, and see the progress of habitat restoration. Light refreshments will be provided.
For additional information and free registration, email Rio Hybert at rio@oswegowatershed.org.
LAND CARE AT BETH RYAN NATURE PRESERVE
Saturday, May 3rd, 10:00 AM – 12:00 PM
Location: Park near the intersection of Village Dr. and Summit Dr.
Partnering with the Columbia Land Trust, this event focuses on restoring native oak habitats and caring for plants planted last fall. Tools will be provided. The Beth Ryan Nature Preserve is owned and managed by Columbia Land Trust. The Columbia Land Trust has worked on improving the trails and property for many years. The preserve is home to a diverse riparian and upland forest and serves as a great wildlife corridor! A group of invasive trees planted as a buffer have fallen during winter storms. This has created a great opportunity to care for native plants we planted in Fall.
For more information and free registration, visit: Beth Ryan Nature Preserve Registration.