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Parks & Recreation

Healthy Parks, Healthy Portland

Phone: 503-823-PLAY (7529)

Fax: 503-823-6007

1120 SW Fifth Ave., Suite 1302, Portland, OR 97204

Urban Forestry Events Calendar

This calendar lists all of the events hosted by PP&R Urban Forestry, including Urban Forest Workshops, Neighborhood Tree Steward events, Tree Inventory Project events, and Arbor Month events.

Explore New Street Trees on Linear Arboretum Walk

Northwest corner of Alberta Park (by the baseball backstop)

Tuesday, April 29 2014, 12:00 PM to 1:00 PM


Event Types > Community Events


Last winter, a number of dead or dying trees – mostly Raywood ashes – were removed from the Ainsworth median between NE 33rd and NE MLK Jr. Blvd.  To ensure a healthy urban forest along Ainsworth, each vacant space is being replanted this spring with a diverse mix of deciduous and evergreen trees.

Our urban forest continually faces threats from introduced pests and plant diseases, risks which may increase with climate change. Having trees from many different families and genera helps guards against losing all the trees along the boulevard from a single cause at the same time.

The Ainsworth median blocks form the city’s Linear Arboretum. As such, they are place to showcase the wide variety of trees that can successfully be grown in Portland. To learn more about the new trees and the Linear Arboretum, please join Neighborhood Tree Steward Jim Gersbach for a free guided walking tour:

Tuesday, April 29th

Noon to 1 p.m.

Northwest corner of Alberta Park (by the baseball backstop)


The new trees include three evergreens and three trees that lose their leaves in winter. They are:


Evergreens                                                         Deciduous trees

Blue Spanish fir                                                  Chestnut oak

Interior live oak                                                    Golden larch

Umbrella pine                                                     Julian hackberry



For more information about the tour or the new trees, please contact Neighborhood Tree Steward Jim Gersbach at 971-271-1056.