The WashU Arboretum makes campus more livable, healthy, and beautiful, benefiting students and the environment as a whole.
Explore our campus trees
Visit Tree Match
A learning tool used to visually identify a tree developed by Toby Utterback, Amee Rothman, and Travis Phulnauth.
News & Announcements
Early April Bloom Report
After days of rain, the trees and blooms in the WashU Arboretum are showing off! If you’re on campus this week, here’s what you may see… Serviceberries Serviceberries are in bloom all over campus, with five delicate strap-shaped petals on each flower and graceful, leaning trunks. Some of the best displays of gathered serviceberries are […]
Bloom Photo of the Week
Week of March 31 Japanese Flowering Crabapple The Japanese Flowering Crabapple on the northeast corner of Olin Library will reach peak bloom this week. Learn more about this tree on the campus arbor walk.
Late March Bloom Report
Week of March 24 Last week marked the official start to spring, and campus has begun to bloom with colors and scents of the season. Below are locations of where to find the most recent blooms in the WashU Arboretum. Okame and Yoshino Cherry Tree Allées Both cherry tree allées (tree lined corridors) on the […]
Campus tree benefits & services
7,076
trees on campus per treekeeper
5M
gallons of water saved
125,329
KWH saved by shading buildings
These trees reduce our greenhouse footprint by sequestering over 240,000 lbs of CO2-equivalent. They also remove over 1,700 lbs of other pollutants from the air.
WashU is one of only ten colleges and universities in Missouri to gain annual recognition as a Tree Campus Higher Education.
WashU holds a Level 3 accreditation by the ArbNet Arboretum Accreditation Program for achieving standards of professional practices deemed important for arboreta and botanic gardens.
Upcoming Events
Event: Earth Day Arbor Walk
FRIDAY, April 22, 2025 3:30 p.m. to 5:00 p.m. MEET AT the brookings Arch Celebrate Earth Day on the Danforth Campus with a plant identification arbor walk. Participants will learn basic techniques for plant identification and be given resources for how to tackle tougher plant IDs. The walk will take place over an approximately 1.5-mile […]