Bloom Photos of the Week 

May 7 Tulip Poplar Located on the north side of Eads and Ridgley, this Tulip Poplar tree was given to WashU in 1991. It was grown from seed from the original Tulip trees planted by George Washington in 1785 at his Mount Vernon home.  Yellowwood The sweet smelling flowers of the Yellowwood tree don’t reliably […]

Bloom Photo of the Week 

APRIL 29 Assorted Peonies All of April’s showers will bring WashU lots of flowers. Assorted peony cultivars will bloom in early May across the Danforth Campus. Places to see them:

2025 Tree of the Year Sticker Competition Winner

On Arbor Day, the WashU Arboretum is delighted to share Annie Tian’s winning design for the 2025 Tree of the Year Sticker Design Competition featuring the Bur Oak.   Tian is a sophomore studying Communication Design and Neuroscience. When asked about her illustration, she said, “If fairies wore acorn caps, a Bur Oak cupule would definitely […]

Bloom Photo of the Week 

APRIL 24 Red Horsechestnut The Red Horsechestnut on the northeast corner of Olin Library reached peak bloom this week. Learn more about this tree on the campus arbor walk.

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 […]

Year in Review: 2024

2024 was a year of growth, change, and opportunity for the WashU Arboretum.  The highlight for the year was WashU’s recognition as a Level III Arboretum under the ArbNet certification – a rare achievement. Currently, less than 100 arboreta in the world have a Level III or Level IV designation—fewer than 20 of those are […]

(Updated) Event: Love Letters to Trees

Do you have an oak that you study under? A magnolia whose flowers you adore? A ginkgo you hold your nose around but still cherish? Visit the Arboretum table at the times and places below to write a letter to your favorite tree! This is the third year of the Love Letters to Trees campaign, […]

Arboretum Sticker Competition – Calling All Tree-Loving Student Artists!

The WashU Arboretum is now welcoming design submissions from WashU students for the 2025 Arboretum token, featuring this year’s Tree of the Year, Bur Oak (Quercus macrocarpa). Design requirements: Submission Deadline: January 31, 2025 All current Washington University students, graduate and undergraduate, are welcome to submit their art for the Arboretum’s third annual Tree of the Year […]