What is an RCA?

When I tell people I’m a consulting arborist they often ask what is that? Everyone is familiar with tree care companies, but not so much what the role of a consulting arborist. The common conception is when there is a tree problem, call up a tree contractor and have them do the work.

Yet, there are many tree problems that require expertise beyond a tree care company. When a tree has a change in condition or conflicts with infrastructure, a consulting arborist is required to assess the situation and make recommendations.

Consulting arborists have one or more certifications.  The primary designation is a certified arborist.  This designation is administered through the International Society of Arboriculture (ISA).  The second and more difficult designation to obtain is that of Registered Consulting Arborist (RCA), administered through the American Society of Consulting Arborists (ASCA). Consulting arborists with the RCA designation are the preeminent authorities on tree related matters.

To receive the RCA designation, an individual must already be a certified arborist.  Once they meet the experience and education requirements, an applicant must enroll in the Consulting Academy.  This rigorous training focuses on technical and report writing. Applicants who receive their RCA designation are trained to produce the highest quality written reports and work product, a terrific benefit for attorneys, insurers and professional consultants.

To learn more about registered consulting arborists, please click on the link below.

What is an RCA

“Arborgeddon” – PTCA Hosts Another Great Seminar and Field Day

Ficus tree roots engulf a curb, seen during Field day at Balboa Park

Ficus tree roots engulf a curb, seen during Field day at Balboa Park

The Professional Tree Care Association (PTCA) of San Diego hosted their annual seminar and field day, a two day event on Friday, August 22 and Saturday August 23, 2014. This was the 25th annual event and like many of the previous seminars, this was another informative, educational experience bringing together a wide diversity of speakers and audience!

The seminar was on Friday and this years theme centered on the ongoing California drought and ramifications to trees. There were a number of great speakers, starting with Mr. Ron Matranga who provided an overview about trees in times of drought, current and future water restrictions . Dr. Roger Kjelgren, Professor from Utah State University, provided a simplified method for landscape irrigation demand estimation. Dr. Linda Chalker-Scott, the Urban Horticulture Extension Specialist from Washington State University discussed how to treat and avoid drought stress in landscape trees and Ms. JoEllen Jacoby, the Water Conservation Landscape Architect for the City of San Diego enlightened us about planning for current and future water restrictions (gulp, better get some rain this winter)!

Ms. Mary Matav, Agronomist from Agri-Serve presented information on how to combat pests and drought, followed by Dr. Tracy Ellis, Entomologist with the San Diego County Department of Agriculture, scaring all of us about tree insect interceptions and quarantines in San Diego County.

A great roster of speakers who delivered relevant information in a beautiful setting at Balboa Park in San Diego. On Saturday, the event transferred to the field, where information discussed at the seminar was applied and viewed in the field, an aspect of the field day I find very beneficial.

As usual, Dr. John Kabashima, the Environmental Horticulture Advisor with the UC Cooperative Extension, presented new, current information on the latest insect threat to our ornamental and agronomic trees in California, that being the Polyphagous Shot Hole Borer, (PSHB). As many of us already know, this destructive ambrosia beetle is now active throughout the Southern California.

The PSHB is an invasive ambrosia beetle that carries the fungus Fusarium euwallaceae.  The female tunnels through the bark and lays galleries of pre-fertilized eggs and grows the fungus, which becomes food the newly hatched beetles.  The fungi infects the tree with a disease called Fusarium Dieback (FD), which interrupts the transport of water and nutrients through the vascular system of the tree.  In essence, this is a vascular clogging disease resulting in dieback and death of a large host of trees.   Unfortunately, there is no cure at the present time and beware of PSHB/FD look-alikes.  Here is very informative attachment Dr. Kabashima provided that really provides current information about this insect.  Handout is published from the University of California and the UC division of Agriculture and Natural Resources.   PSHB Information

Many thanks to all of the hardworking voluntary staff of the PTCA.  What a great local association, I am very proud to be a member of.  The PTCA is an active association promoting the best in tree care and tree knowledge.  An association composted of tree care companies, certified and consulting arborists and tree care  professionals, the PTCA continues to provide current and relevant topics for it’s membership and community at large.  Thanks again PTCA, looking forward to next years Seminar and Field Day!

What to do With Your Xmas Tree?

Fortunately, most municipalities now have recycling programs for green waste, making it easier for homeowners to recycle their used Xmas tree.  Recyclers grind or shred trees into a mulch which is then composted and eventually becomes available as a bulk or bagged mulch product.  This is certainly a preferable option than the “old days” when trees were commingled with regular trash and buried in landfill sites.

If you have a large tree, prune off some branches and reduce the overall size to ensure local curbside pickup.  If you have the room on your property, you can do your own recycling via a compost bin, pile or simply leaving the tree in an area where it will slowly decompose on its own.  Leaving a tree whole may also become home to birds and other animals for shelter or nesting site.  Make sure all tinsel and other decorations have been removed from the tree.

If you  have a live tree, it can be re-planted into the outdoor landscape.  Remember, depending on the variety of pine tree, these are typically large growing trees.  Despite the small size now, ten to twenty years down the road, you may have a forty to sixty foot tall tree.  I have seen this issue while consulting on residential sites where a neighbors Xmas tree planted near the property line grew to fifty-five feet, with limbs and roots encroaching into the clients property, damaging concrete improvements and posing an increased safety  risk.  If you are going to re-plant the tree, make sure you have the space for a large pine tree to grow, avoid planting near property lines, driveways, sidewalks and patios.

For more information about Xmas tree recycling, check out this article at:

Making the most of the Christmas Tree

Can a Tree Capture Particulate Matter from the Air?

For years, certified arborists and urban foresters have learned the many benefits of trees. Energy savings are one of the foremost known benefits of trees as they shade building during the summer reducing the need for air conditioning and deciduous tress allow sunlight to reach structures during winter months, solar radiation decreasing the need for winter heating.

Another known benefit for trees are their ability to reduce storm water runoff and erosion, particularly during the winter months. Tree root systems bind soil particles and slow storm runoff from roofs and other impervious surfaces, trees act as bio filters, slowing storm and irrigation water runoff and allowing the water time to slowly percolate into the soil profile rather than run off into the street or storm drain system.  By forcing water to pass through the soil profile, rather than runoff into storm drain systems, the soil mass filters impurities before the water enters into streams, ponds and aquifers.

Birch Tree planting works as filter

A Birch street tree planting used for testing as a green filter to remove particulate matter from the air we breath

Continue reading “Can a Tree Capture Particulate Matter from the Air?” »

Love the Beauty of Your City? Thank the Landscape Architects who Made it Happen

I recently read a great article by Delle Willett of the North Park News entitled Landscape Architects:  Artists with the Earth as a Canvas.  The article focused on three local women landscape architects who have made significant contributions to enhancing the aesthetics and functionality to the City of San Diego.

While reading about the history of female landscape architects, I couldn’t help be reflect on my own background and education within the fielof landscape architecture and landscape contracting.  As a college student, my path began at UC Santa Barbara and completed with a Bachelor of Science degree from California Polytechnic University, Pomona.

I wrote and article correlating my own academic history with the three landscape architects discussed in the newspaper article.  For men or women interested in the field of landscape architecture, design, planning, horticulture, arboriculture and landscape contracting, or anyone who struggled to find their own passion and career path in college, I think you’ll enjoy the read.

Landscape Architects Making Significant Contributions to City of San Diego

Landscape Architects: Artists with the Earth as a Canvas.

 

 

Paradise Lost?

Smoke from the Silver fire envelopes above wind turbines in mountains near Palm Springs

Smoke from the Silver fire envelopes above wind turbines in mountains near Palm Springs

The picture above is taken from a recent article in the Los Angeles Times. The Silver fire burned over 20,000 acres, injured at least 8 people, some with serious burns and destroyed many structures. It also has left yet another blackened scar over a huge swath of Southern California mountainous wildland area. The article in the Times is about the state’s fire plan and what many critics contend is an outdated model that no longer works. Continue reading “Paradise Lost?” »

PTCA Field Day a Great Success

Wow, just when I thought the PTCA (Professional Tree Care Association) annual seminar was the bomb, the following field day was just as great. While the seminar was an indoor event focusing on a variety of topics presented by outstanding industry professionals and educators, the field day was spent outdoor at beautiful Balboa park in San Diego.

The day consisted of a number of workshops organized into several different tracks that allowed participants to choose from a palette of presentations that provided something for everybody. Tree climbers and field workers loved the tree climbing workshop and training by Mr. Martin Morales. His workshop included climbing and positioning for safe work in trees, also taught about knots, ropes and equipment inspection, while providing new tips and tricks. I am way to old for climbing, but enjoyed watching guys in the trees, had an opportunity to meet Martin during an incredible lunch (carne asada). We were looking at a rigging holding a tree logIMG_0042, he immediately pointed out flaws and worn equipment, I would never have noticed. Fortunately we have educated tree climbers who understand the importance of proper equipment, training and safety.  Another track included Tree Risk Assessment best management practices (BMP’s) workshop taught by Mr. Ron Matranga and Dr. R. Bruce Allison. Since I consult and provide tree risk assessment as part of my practice, it was a great opportunity to learn about  best management practices involved with the new TRAQ (tree risk assessment qualified) versus the previous TRACE (tree risk assessment certification exam) methodology. Dr. Allison demonstrated new sonic tomography techniques for non-destructive testing of the interior of tree trunks, new cutting edge technology that is already an advancement from just two years ago. Using probes and determining the time for sound waves to travel through tree trunks and how the sound wave moves at different velocities around interior trunk decay will assist arborists to use in advanced tree risk assessment. As Dr. Allison noted, hopefully in the next few years, the cost will come down and we will have a pocket sized device and an app to use to help us understand what is happening with interior tree decay.

Sound wave technology, the next big thing?

Sound wave technology, the next big thing?

How serious is the problem

How serious is the problem

We all know about new invasive insects and diseases affecting our trees, new invasive species are being detected at a rate on one every 60 days, Dr. John Kabashiima provided the sobering statistic it is now one every 45 days! The gold spotted oak borer has decimated tens of thousands of Coast Live Oak and Black Oaks throughout California.

Six orange color dots help identify this pest, although the adult is rarely seen

Six orange color dots help identify this pest, although the adult is rarely seen

This pest has been spread throughout the state, particularly San Diego county by people using the dead wood for fire wood, transporting it in their vehicles where they unwitting spread the insect throughout the county. Don’t move infected wood!

Stop using infected wood for fire wood and don't transport the wood, you are spreading the disease

Stop using infected wood for fire wood and don’t transport the wood, you are spreading the disease

Take a look at some of these nasty borers and other insects, yikes!Nasty Borers

For pest control advisors and applicators, there was a pesticide application for trees demonstration and a safety workshop and tree identification workshop and quiz available to test your knowledge. Field guys loved the chainsaw sharpening and troubleshooting workshop presented by Mr. Paul Lasiter and Mr. Joe Garcia. Another great aspect for everyone was presentation of many workshops in Spanish and English, a very inclusive aspect that helped all of us enjoy the day.

I learned a great deal of new information I never would have even considered without this great field day presentation. Have you ever considered how heavy a downed tree trunk is?  Well, there was a workshop on how to calculate the wood weight of felled trees, presented by Mr. Harvey Pedersen. Crane operators have to have a reasonable idea of how much a log or portion of a tree trunk weighs in order to safely lift it. Mr. Pederson presented wood weight calculations of various types of trees and an amazingly accurate method for estimating the weight of a log, which was then lifted by the crane which provided the true weight to compare against our estimated weights. How cool is that!

How much do those logs weight?

How much do those logs weight?

Just want to thank all of those involved in the PTCA Seminar and Field Day for a truly memorable event, a special thanks to our friend Dave Shaw

Dave kept us all entertained, what a great guy!

Dave kept us all entertained, what a great guy!

 

who once again served as the master of ceremony and kept us all entertained. Keep up the great work, looking forward to next years seminar and field day.

Learn more about the PTCA at http://www.ptcasandiego.org

PTCA Arbor Essence

No, this is not a perfume, rather it is the title for this years PTCA Seminar and Field Day.  PTCA, known as the Professional Tree Care Association of San Diego, is a premier industry association for professionals within the tree care industry.  The association contains a wide diversity of professionals, including representatives from outstanding tree care and tree service companies, ISA (International Society of Arboriculture) certified arborists, utility arborists, board certified master arborist, ASCA (American Association of Consulting Arborists) RSA’s (Registered Consulting Arborist), and industry professionals from utility companies, San Diego Zoo, golf courses, private industries, landscape contractors, landscape architects, educators and more.

A common thread shared by all of these different professionals and educators is our love of TREES and desire to further improve our understanding of the field of arboriculture!  It is a comforting feeling sitting is a room with hundreds of people sharing our knowledge and experiences with trees, learning new information, meeting old and making new friends.

Each year, the PTCA sponsors the annual Seminar and Field Day.  The first day (today) featured an incredible diversity of speakers and topics, there is something for everyone.  Here is a sampling of todays speakers:

Ms. Leah Rottke, professor at Cuyamaca College spoke about what to plant now for upcoming changes brought about by climate change in Southern California, Ms. Pat Nolan, County Pathologist for San Diego County of Department of Agriculture spoke about invasive diseases  moving into the Urban Forest.  In the morning session, Dr. Tom Scott, Ph.D., Department of Earth Sciences, UC Riverside discussed Management of Oak trees in San Diego County followed by an afternoon discussion about the Gold Spotted Oak Borer research (GSOB) and update.  Mr. Ron Matranga, Board Certified Master Arborist from Atlas Tree Service provided an overview of the ISA Traq (Tree Risk Assessment Qualified) program and Mr.Randall Stamen, Esq., from Riverside, California delivered a sobering lecture about Arboriculture and the law, including tree risk assessment and case studies.  Mr. Brian Bishop of Bishops Tree Service discussed improving the efficiency of tree crews and Dr. John Kabashima, Ph.D., UC County Extension, Orange County gave an entertaining lecture about effective sampling for diagnoses of insect and disease problems.  All of that in ONE day!

Really looking forward to tomorrow, the field day featuring workshops in tree risk assessment and BMP (best management practices), insects and diseases of shade tree diagnoses, pesticide applications for tree demonstrations, safety and tree identification, electrical safety, wood weight calculations, improving efficiency and maximizing safety.  There will be a tree climbing workshop provided in Spanish and English.

If you are a tree, landscape, horticulture, educator, consultant, or expert witness and have not yet attended a PTCA field day, you are missing out on a premier educational and entertaining event.  Members of the ISA, ASCA and urban forest councils, city and jurisdictional representatives, recreational and utility companies all come together in a common bond of learning, teaching and sharing, not to mention fantastic networking opportunities.  Hope to see you at the next PTCA Seminar and Field Day!

Learn more about the PTCA at http://www.ptcasandiego.org

Oak Tree Failure Kills Counselor at Camp Tawonga

Camp Tawonga Tree Failure

My son Jake called yesterday very upset, telling me about an oak tree falling and killing a counselor at Camp Tawonga near Yosemite, CA.  My son graduated with a degree in Environmental Studies and Economics from UC Santa Cruz last June and worked the summer at Camp Tawonga.  He loved working there and returned for some part time work last fall.

What was chilling was his description of the exact location where the tree fell, he said he often sat nearby the spot and even sat under the tree!  He knew the counselor, Annais Rittenberg from UC Santa Cruz, where he also took the environmental field course his senior year.  Needless to say, he is shocked by what happened.

As a certified arborist, I provide tree risk assessments, a process of tree investigation and analysis that rates a tree defects and determines the hazard potential of a tree part or whole tree failure.  I have worked with plaintiff and defendant attorneys concerning tree failures and accidents, yet this accident struck very close to home.  I keep thinking about how that easily could have been my son under that oak tree when it failed.

Who knows if this failure could have been predicted?  My son mentioned how the area where the tree was located was irrigated daily throughout the summer, he said the tree trunk split and fell.  Was there root rot, cavities, or decay in the trunk?  Was the crown showing signs of stress?  Would a risk assessment have determined the tree was structurally unstable?  Maybe yes or no, I certainly don’t want to speculate, as I do not know the facts.

Tree failures resulting in human fatalities are very low, yet it only takes one failure to change lives forever.  My heart and sympathies to the family for the terrible loss.

This should serve as a reminder to camps, recreational facilities, golf courses, R.V. parks and manufactured housing communities to inventory and inspect your tree assets on your property, common spaces and even notify homeowners of endangered trees on their private lots or property.  Facility owners who take proactive measures to inspect, inventory, assess and maintain their tree assets increase the chance of detecting and minimizing tree related accidents before they happen.

 

Winter Sweetness!

Talk about a winter treat, try growing your own semi dwarf citrus tree(s). Last year, I planted a 15 gallon “Satsuma” seedless mandarin orange and one year later, we are feasting on an amazing harvest of sweet, juicy seedless mandarins. Try using mandarins in salads and dressings, not to mention fresh off the tree anytime!

I found the plant fairly easy to grow, full sun with normal fertilization and decent drainage. I kept the soil pH on the acidic side, the plant did great. I strongly recommend this particular variety because it stays relatively small, easy to maintain, and heavy fruit production.

Late fall / winter maturing citrus is such a special treat to have in Southern California. Just imagine all those mid western and eastern folk never having the opportunity to grow and have fresh citrus like we do!

With many varieties to choose from, you can select a tree that suits the size of your property. A nicely maintained citrus tree can be a very attractive small to mid size tree with the added fruit as a tremendous benefit.

Enjoy!