Oswego Lake Watershed Council
The mission of the Oswego Lake Watershed Council is to foster stewardship, education, participation, and financial support for the purpose of the conservation, restoration, enhancement, and maintenance of watershed functions that achieve and sustain a healthy watershed.
Tree Care During Heat Waves!
The fingerprints of climate change are becoming more pronounced with the record crushing temperatures predicted for the Pacific Northwest. As prolonged heat and drought become part of the normal rhythms of the season, how do we take care of our trees? Unprecedented temperatures and seasons of drought can be extremely hard on trees, especially landscape trees in our urban forest. If not well-watered, harsh temperatures make trees more susceptible to insects and disease. Extended periods of drought can cause stress in both newly planted trees and mature, well-established trees.
We’ve collected tips from City of Lake Oswego, Friends of Trees, OSU Extension and Clackamas County Master Gardeners, and Portland Parks & Recreation to help you shift into summer plant care mode and help your landscapes better handle and recover from spans of extreme heat.
LEARN MORE….
Check out the recording for This IS Kalapuyan Land, a virtual talk with Steph Littlebird, an indigenous writer and artist, and curator of a physical and online history, culture, and land acknowledgment exhibition of the Kalapuyan peoples. The recording includes Steph’s process of annotating panels from the museum’s prior exhibit on Kalapuyan peoples and curating contemporary Native artwork into the exhibition.
Weed of the Month: Tansy Ragwort
Tansy ragwort (Senecio jacobaea) is an invasive weed with a long and deadly history in the Pacific Northwest. In Oregon, it is designated as a Class B invasive weed. It is believed to have been introduced here in the early 1900s through ballast water from a ship.
Tansy ragwort is a killer. This noxious weed is dangerous to humans and livestock due to a poisonous alkaloid in its tissue which causes liver damage when ingested.
2024 Local Native Plant Sales
Whether you’re planting or planning, good things to know!
Click on the image above to find local sources of native plants, including local plant sales, as well as retail, wholesale and native plant seed suppliers.
For more resources including what plants to use for different conditions (sunny & dry, shady & wet, etc.), you may want to also look HERE.
