In a Tree Profile over 10 years ago, I raved about the American hornbeam, Carpinas caroliniana and still feel the same today. With the more recent arrival of several new cultivars which display some of the best characteristics of this species, an update on this tree is in order.
Let’s start with its generic attributes. The pioneer nicknames of “Blue Beech”, “Muscle Tree” or “Ironwood” of the species are suggestive of what a tough Midwest native tree this is. Considered a small tree, the ultimate mature size is approximately 30-feet tall by 20-feet wide. They may grow larger under optimum conditions. It has few, if any, disease or insect pest concerns in this region and as the name implies, has branches “of steel”. In my experience, branches can bend like rubber and not break, which is a good testament for strength. This is a good urban tree characteristic.
Read More "American Hornbeam Cultivars – Carpinus caroliniana: Native Flame®, Palisade®, Ball O’ Fire™, & Rising Fire®"
There are so many reasons to be an ISA Certified Arborist in 2019. We are the ones that can mitigate development consequences and edge effects. We can retain trees, create beneficial wildlife snags rather than remove all the material, preserve old trees through pruning and cabling, design storm water runoff away from valuable trees through rain gardens, replant when removing trees, and plant natives and non-native species. Wait, what – non-native? Yes! Know when a site has changed to a new condition and recommend the right plant in the right place. The urban forest is not like the native contiguous forest. People live in cities, and cities need trees. Urban foresters and ISA Certified Arborists are important for adaptable urban forests. (“A city without trees is dead. Alex Shigo”)
Do you ever ask yourself what it means to be a female arborist? Or perhaps, what your friend or wife goes through to practice Arboriculture? Historically, the Forestry and Arboriculture fields have been male dominated, and I feel that it is still male dominated. I climb like a girl because that’s what I am; those words in that order have generally been derogatory. But I am a girl. When I walk into a board room to lead a meeting, am the only female in the room, and I know the most about the trees and the stakeholders, do I have to consider my gender? When I’m on a consult or in charge of my job site with male homeowners and other male arborists, do I consider it? Because I run our male tree crew and our family with my husband, do I have to consider it? Well, the answer is yes and no.
Read More "Women In Arboriculture"
Although hardhats and hearing protection are, for the most part, in use by tree workers across the PNW, insidious attitudes are always lurking towards PPE whether it is aimed at premium protective equipment, PPE options not required by regulators (gloves, protective footwear or chainsaw pants in some parts of the chapter), PPE care, or the ongoing inspection and replacement of PPE. I expect that most tree care operations and their employees consider themselves to be compliant on the PPE front (particularly those that read this newsletter). If you feel that to be the case with your workplace, I have one question to ask:
Does your workplace request third-party observations and recommendations (formal or informal) on interventions that might improve the outcomes of worker health and safety, worker ergonomics and worker efficiency via PPE?
Hopefully the answer is yes.
It’s probably time to start talking about PPE as a program or system rather than a thick piece of plastic intended to keep skin from disappearing or bones from shattering. Read More "To PPE or Not to PPE"
PNW-ISA is offering two unique climbing workshops in Seattle, Washington in June. Registration is now open for the Women’s Tree Climbing Workshop and the Advanced Tree Climbing Workshop.
June 7-9, Seattle, WA - Join the Waitlist
PNW-ISA has teamed up with the Women's Tree Climbing Workshop to offer a fun and safe space to learn to climb. Taught by International Tree Climbing Championship competitors Bear LeVangie and Melissa Levangie, this workshop is for women who have never climbed trees as well as those who have prior experience and want to improve their ability.
PNW-ISA thanks our generous 2019 sponsors who are helping to make the Women’s Tree Climbing Workshop possible:
Bartlett Tree Experts
BC Plant Health Care
Champion Tree Care
D. Clark Arboriculture
Davey Tree Expert Company - Canada
Davey Tree Expert Company - USA
Fruitful Tree Care LLC
Morgan Holen and Associates
Out on a Limb Tree Co
Radix Tree & Landscape Consulting
Renaissance Tree Care
Seattle Tree Care
Shelter Tree Inc.
Sonshine Tree Care
Sweaty Betty Tree Care
The Tree Service
Tree Solutions, Inc.
The Tree Stewards
We are looking for additional sponsors. Interested in sponsoring this year's PNW-ISA Women’s Tree Climbing Workshop? Your sponsorship will keep workshop registration fees affordable by helping to cover instructor travel costs, lodgings, food, climbing gear, and scholarships for participants in need. Please contact firstname.lastname@example.org if you are able to support this event.
June 10, Seattle, WA - Register Now
While on the west coast, the LeVangie sisters will also lead an Advanced Tree Climbing Workshop for climbers who are beyond the basics. This workshop is open to all genders. Come learn advanced climbing techniques from an experienced team.
Full schedule and course descriptions for PNW-ISA workshops available at pnwisa.org.
Many cultures regard trees as part of their heritage. How is inherited knowledge passed from generation to generation through trees? How can we use trees to tell stories and connect with our ancestors? In this article, we’ll explore how cultures have shaped our “human-tree” relationship in different parts of the world I have traveled.
Tu Di Gong, Gods and Trees
During the summer of 2010 I packed my prized climbing set-up, a couple changes of clothing and headed to Hong Kong, China. There I joined my colleague, Will Koomjian, to complete contract work for the Hong Kong Government. Upon arrival at the airport, I unfolded the directions I had jotted down on scratch paper. The notes depicted a bus transfer and an hour and a half trip through the Northern Territory of Hong Kong. My destination, Sui Hang San Tsuen, bordered Shenzhen, China. I was greeted by Don the local arborist and promptly put to work at a nearby site. Jetlagged, on the first day, I was shown how to use GPR and Tomography to examine the underground roots of old, roadside Melaleuca trees before an improvement project. I was impressed.
Over the next year, Will and I found ourselves climbing and writing reports for hundreds of spectacular specimen trees managed by the Hong Kong Government. Many of these trees were deemed Old Valuable Trees (OVT’s) which gave them special recognition and protections. This program could easily be compared to a heritage tree program ran by a city, county or state here in North America.
Read More "A Community of Trees"
To keep up with research based changes in arboriculture and urban forestry we rely on guidance from a number of professional sources. The most important are the American National Standards Institute (ANSI) Practices and Limitations. Because the ANSI A300 standards are written in a very austere style, they are interpreted and expanded upon in the ISA Best Management Practices (BMP’s). Both of these types of publications guide professionals in writing and implementing tree work.
Read More "Root Removal Best Practices"
The Cities of Boise, Caldwell, Eagle, Kuna, Meridian and Nampa, Idaho are proud of their trees! It was with this sentiment of value and appreciation for our trees that the TV Tree Selection Guide was created. Based largely on the original version from the Boise Parks & Recreation Department’s Tree Selection Guide developed by the Urban Forestry Unit in 1995, the new guide was fashioned.
It was time…time to broaden tree species selections to include new cultivars. And, remove old ones that were not performing well. This was a labor of satisfaction for everyone involved. Read More "Treasure Valley Tree Selection Guide: A Process of Transformation"
The PNW class “Common Fungi Affecting PNW Trees and Implications for Tree Risk Assessment” was a classroom/outdoor course in tree diseases, and particularly anyone conducting risk assessment of trees with disease. Led by Dr Julian Dunster and Professor Bob Edmonds.
The diseases covered included Phaeolus schweinitzii, Heterobasidion occidentale, Armillaria ostoyae, Porodaedalea pini, Kretzschmeria deusta, Phellinus sulphurascens, Neofusicoccum arbuti and others.
Morning lectures covered visual assessment techniques for disease, using a combination of signs and symptoms of common diseases in native PNW trees. Sonic tomography and resistance drilling will be discussed as examples of advanced risk assessment techniques.
The afternoon was spent outdoors examining diseases of Douglas-fir, western hemlock, western red cedar, bigleaf maple, and Pacific madrone. The types of wood decay, fungus fruiting bodies, as well as structural and risk implications will be covered.
The PNW is grateful to have Roger Barnett attend, to learn and capture moments on digital film for all to take a peek into this course. Please see some of these moments on this flicker account below:
We porta-wrapped up the PNW TCC 2018 with huge success! PNW-ISA hosted the event in beautiful Vancouver BC at Stanley Park. To see familiar faces, shake new hands, and share stories with each other is such a gift. Our Chapter continues to progress and expand into a new and bright canopy of good tree people. Without all the support from our membership, these educational events and skills competitions would senesce. Enjoying the aerial feats of strength and agility is mesmerizing, and it is an amazing opportunity to show the public how we use rope access to manage their trees, and have fun at work.
Read More "2018 PNW-ISA Chapter Tree Climbing Competition Results"