Arbor WeekCommunity Ivy Pull
April 5-12, 2020
Lake Oswego has a diverse urban forest and has been a member of Tree City USA for over 30 years! This means that individual trees throughout the city connect to create an urban forest system that provides countless benefits to the community. Do you love Lake Oswego’s trees and want to make a difference? Oswego Lake Watershed Council (OLWC) is encouraging the community to celebrate Arbor Week 2020 by working together to preserve our urban forest.
Ways to get involved this year include helping to organize an Urban Forest committee in your neighborhood, or participating in a community-wide effort to maintain tree health by removing invasive ivy from trees!
This Arbor Week, be an urban forest hero and protect your neighborhood trees from invasive ivy! Between April 5th and April 12th, 2020, OLWC is encouraging community members to make a difference by removing tree ivy in their neighborhood.. Being an urban forest superhero is hard work and we want to ensure that we recognize the efforts of our community super heroes (sorry, no keys to the city will be rewarded). Take a photo of trees that you saved from ivy and send them our way by tagging @oswegolakewc on social media (Facebook, Instagram) by using #LOTreeHero . At the end of the week, we will post how many trees the community saved from ivy during Arbor Week!
Information on how to safely remove ivy can be found below. If you have additional questions about ivy removal methods or how removing ivy can benefit our trees, please email Jack Halsey, Watershed Coordinator.
Why are we removing ivy?
Ivy’s biggest advantage is its ability to climb trees. By using existing tree trucks for structure, Ivy can rapidly grow up trees to access light without expending energy on creating its own support structure. The problem? Ivy takes sun and water resources from trees. And, it’s heavy. If left unmanaged, mature tree ivy can break limbs and eventually topple large trees. By removing ivy, we can save our trees! If you’re interested in the science of ivy’s success, check out this great article https://tryoncreek.wordpress.com/2017/06/23/english-ivy-forest-invader/
Where can I remove Ivy?
What tools do I need to remove Tree Ivy?
- Work Gloves
- Hand Clippers or Loppers
- Pruning Saw (for large ivy vines)
- A camera (optional). Take before and after photos and share your work on social media using the hashtag #LOTreeHero
If you don’t have these tools, ask a neighbor if you can borrow theirs! Or, contact firstname.lastname@example.org and we can lend you tools.
How Do I Remove Ivy?
“GIRDLE: The most basic technique to stop tree-climbing ivy dead in its tracks.
Once you have located a tree with ivy, use either loppers or a pruning saw to cut through each vine clinging to the tree trunk at shoulder height and at ankle height. This severs the connection between the life-sustaining roots and the rest of the ivy. Be sure to cut ALL vines as even one can continue to nourish ivy higher up the tree. Strip the Ivy away from the tree between the two cuts – some vines can be so big that you need to pry them away from the tree – just be careful not to damage the bark. Toss the stripped section of vine or save one or more as a trophy – how will your friends believe that you cut away a vine as big as your arm without the proof? Recheck the ‘girdled’ area for any thin vines which may have grown under the tree’s bark and you’re finished. But, after all that work, you don’t want to give ivy a head-start by leaving it to grow next to the base of the tree.
FULL LIFESAVER: After girdling the ivy from a tree, work to clear the surrounding ground ivy
Imagine a 6-foot radius circle around the target tree, begin by peeling back the ivy mat 6 feet from the tree and thoroughly pulling every vine and root from the circle.
You may also find it helpful to cut “lines” in the ivy mat within your imaginary circle and rip out ivy like a piece of pie. Cutting “lines” in the dense mat allows for precision removal around delicate plants and immovable obstacles. You will save more time and energy pulling around rather than through these obstacles. If you are working on a slope, pull downhill and let gravity work with you and The keys to an effective Lifesaver are consistency and patience; all vines and roots must be removed.”
Ivy removal methods in this article are from No Ivy League’s extensive website on Ivy removal. Want to learn more about invasive ivy removal? Check out their website:
Want to do more stewardship work in Lake Oswego? Check out our event page and sign up for an upcoming volunteer event!