Ariel Schwartz reports on an art project turning Seattle's trees an electric shade of blue in an effort to raise awareness of them.
Developed by Australian artist Konstantin Dimopoulos, the art project which has appeared previously in Vancouver, BC, and Auckland, New Zealand, and known simply as Blue Trees, is "intended to make people more aware of the trees that surround them."
According to Schwartz, "The Blue Trees project aims to get trees, which all too often fade into the background of cities, noticed by everyone. In each city where the project has been installed, Dimopoulous turns clusters of trees an electric blue with a kind of paint that washes away in the rain. The artist says that the paint is not hazardous."
Dimopoulous describes his motivation for the project as such: "Through colour I am making a personal statement about the spirituality of trees and their importance to our very survival: trees are the lungs of the planet."
Residents of Florida, Boston, and London be forewarned, your trees are next on the list for psychedelic alteration.
FULL STORY: Why Seattle’s Trees Are Turning Electric Blue

Maui's Vacation Rental Debate Turns Ugly
Verbal attacks, misinformation campaigns and fistfights plague a high-stakes debate to convert thousands of vacation rentals into long-term housing.

Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

In Urban Planning, AI Prompting Could be the New Design Thinking
Creativity has long been key to great urban design. What if we see AI as our new creative partner?

Pedestrian Deaths Drop, Remain Twice as High as in 2009
Fatalities declined by 4 percent in 2024, but the U.S. is still nowhere close to ‘Vision Zero.’

King County Supportive Housing Program Offers Hope for Unhoused Residents
The county is taking a ‘Housing First’ approach that prioritizes getting people into housing, then offering wraparound supportive services.

Researchers Use AI to Get Clearer Picture of US Housing
Analysts are using artificial intelligence to supercharge their research by allowing them to comb through data faster. Though these AI tools can be error prone, they save time and housing researchers are optimistic about the future.
Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
planning NEXT
Appalachian Highlands Housing Partners
Mpact (founded as Rail~Volution)
City of Camden Redevelopment Agency
City of Astoria
City of Portland
City of Laramie