Community Science at Hoyt Arboretum: Clematis Removal & Tracking Project

Community Science at Hoyt Arboretum: Clematis Removal & Tracking Project

Date(s) - May 20, 2021
10:00 am - 11:00 am


Join Hoyt Arboretum’s plant taxonomist and herbarium curator Mandy Tu for an online Zoom workshop on Thursday, May 20 from 10-11am to learn about this new community science project at Hoyt Arboretum!

Clematis vitalba, also known as Old Man’s Beard or Traveler’s Joy, is an invasive canopy weed that is abundant throughout the Portland metro region and has also been identified at Hoyt Arboretum. The Clematis Removal and Tracking Project aims to train community scientists to identify Clematis vitalba, report its location using iNaturalist, and remove it. Hand removal of Clematis over several growing seasons has been documented as an effective method for permanent control. This volunteer-driven community science project will lead to the development of an ongoing monitoring, reporting, and removal process to eliminate Clematis vitalba from Hoyt Arboretum and select Washington Park Natural Areas.

At this introductory training, volunteers will learn how to identify Clematis vitalba and differentiate it from other native species with a similar appearance and learn to use the iNaturalist app to submit collected data. Volunteers who decide to continue with the project and participate in onsite monitoring will need to attend a second in-person field session to learn best practices for removal including proper use of tools.

Volunteers should be available to visit the Arboretum for a minimum of two hours per month during the growing season (approximately May through October) and are encouraged to be available for a minimum 6-month commitment. This volunteer role is a great opportunity for individuals interested in community science and volunteering outdoors with a flexible schedule. Read the volunteer position description here.

This online training will be recorded, and the video will be shared with individuals who are not available during the live session.

Questions? Please contact Becky at


Bookings are closed for this event.

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