School of Arboriculture

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Increase your tree and landscape knowledge! The Arboretum's Professional Courses, offer CEUs for arborists and landscape architects, and keep you at the forefront of your profession. These courses are open to professionals and novices, and are all taught by national leaders in their field of expertise.

Certified Arborists: Our courses carry International Society of Arboriculture Continuing Education Units (CEUs). If you are an ISA certified arborist and need to maintain certification by taking 30 credits over a three-year period, the following classes offer the opportunity to gain CEUs while learning from field experts.

Landscape Architects: Many courses are Pennsylvania CE certified.  If you are a Landscape Architect in Pennsylvania, specified courses will help you meet the requirements of the necessary course time of 24 clock hours / 2 years. 

Register for classes below! 


Select the class(es) for which you wish to register:

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Quantity and Pricing
Municipal Arboriculture: Role of Urban Forestry (Class is Full)
Robert Wells
Associate Director of Arboriculture Outreach, Morris Arboretum

Urban forestry is the careful management of tree populations in urban settings for the purpose of improving the urban environment. This course is designed to provide a comprehensive survey of the role of an urban forester in the management of publicly owned trees in city parks and rights of way. The focus will be on the management of tree populations rather than individual trees. We will discuss quantifying and assessing the urban forest, as well as planning and budgeting for planting, pruning and all of the arboricultural tasks needed to maintain a healthy municipal treescape. This course will help to prepare individuals for the ISA Municipal Specialist Exam. You must apply to take the ISA Municipal Specialists or other Certification Exams separately from this class registration. Applications can be obtained at For further questions about the exam, please contact the ISA office at (888) 472-8733 or

This course carries 5 CEUs for ISA certified arborists (S=2, P=1, M=2).

Friday, February 23 - 9:00 a.m. - 3:30 p.m.
Fee: $140 (includes lunch)
Friday, February 23, 2018 at 9:00 AM
Attendees: 1 $ 140.00 ea.

Landscape Design for Professionals
Paul D. Orpello
Horticulturist, Morris Arboretum

The world of landscape design is continually evolving. Hitting the design target for critical customers has become increasingly difficult as well. In this ever-changing world of landscape design integrated with customer satisfaction, it helps to have an experienced guide . Award-winning landscape designer and ASHS certified professional horticulturist, Paul D. Orpello, will demonstrate how to successfully navigate these complex waters. Paul will cover all phases of the design process from client meetings to project completion. There will be an informative lecture discussing the essential components of the design process and client interaction. The lecture will be followed by a studio session where we will work on meeting specific client needs in a designed environment. Come and learn how to increase your effectiveness as a designer while increasing your profitability as a professional!

This course carries 5.5 CEUs for ISA certified arborists (S=0, P=2.75, M=2.75). LA-CES credits for landscape architects have been applied for.

Tuesday, February 27 - 9:00 a.m. - 4:00 p.m.
Fee: $140 (includes lunch)
Tuesday, February 27, 2018 at 9:00 AM
Attendees: 1 $ 140.00 ea.

Protecting & Preserving Trees During Construction
Jason Lubar
Associate Director of Urban Forestry, Morris Arboretum

Trees are valuable assets to commercial and residential property, contributing up to 25% of the property’s assessed value. Successful tree preservation during construction assures the project’s goals are achieved without jeopardizing the health and lifespan of protected trees. Since there must be a collaborative process by decision makers for this to occur, people from all disciplines involved with the construction process, such as landscape architects, builders, developers, architects, and arborists, will benefit from this presentation. Information covered includes how to designate adequate tree protection zones based on the tree’s structural and biological needs, specifying and installing protective fencing, and how construction processes such as cut/fill, trenching, and soil compaction effect both existing and proposed trees. Valuable lessons learned from working on a variety of construction jobs will be presented, tree protection specifications will be discussed, and tree protection myths will be presented and dispelled.

This course carries 5.5 CEUs for ISA certified arborists. (S=0, P=2.75, M=2.75). LA-CES credits for landscape architects have been applied for.

Friday, March 2 - 9:00 a.m. - 4:00 p.m.
Fee: $140 (includes lunch)
Friday, March 02, 2018 at 9:00 AM
Attendees: 1 $ 140.00 ea.

Managing Invasive Plants Strategically: Objectives & Methods
Daniel Barringer
Preserve Manager/Invasives Management Coordinator, Natural Lands

Amy L. Jewitt
Invasive Species Information Assistant, Pennsylvania Natural Heritage Program

Jess Slade Natural Areas
Horticulturist, Morris Arboretum

After habitat loss, invasive plants and animals represent the greatest threat to endangered species. Invasive species can change plant community structure, composition, and ecosystem processes on preserved lands in ways that may not be anticipated or desirable. This intermediate course will cover goals, objectives, and strategies for managing invasive species and help prioritize sites, species, and populations. We will cover examples of invasive species and use case studies to talk about Early Detection-Rapid Response, noxious weed law, and different forms of management: mechanical, chemical, biological, and cultural. The class will cover electronic tools for collecting data on invasives management projects, specifically the iMapInvasives website and mobile app. An afternoon field session will look at some of the invasive plants and management challenges in the Natural Areas Section of Morris Arboretum. We will wrap up with a discussion of invasive species that are not yet widespread in our region but are ones to look out for.

This course carries 5.5 CEUs for ISA certified arborists (S=2, P=1.5, M=2).

Friday, March 16 - 9:00 a.m. - 4:00 p.m.
Fee: $140 (includes lunch)
Friday, March 16, 2018 at 9:00 AM
Attendees: 1 $ 140.00 ea.

Pruning Shrubs for Maximum Health and Beauty: A Hands On Class
Vince Marrocco
Chief Horticulturist, Morris Arboretum

Pruning shrubs is an essential practice for a well-maintained landscape. While proper pruning is important, it is not difficult if you understand the basics. This class teaches the principles of why, when, and how to prune a variety of shrubs and hedges. A morning lecture and demonstration will be followed by an afternoon session of supervised, hands-on pruning. Please bring your pruning tools and dress appropriately for the weather.

This course carries 4.5 CEUs for ISA certified arborists (S=1.5, P=2, M=1).

Tuesday, March 20 - 10:00 a.m. - 3:00 p.m. *Raindate: Thursday, March 22
Fee: $120 (includes lunch)
Tuesday, March 20, 2018 at 10:00 AM
Attendees: 1 $ 120.00 ea.

TRAQ - Tree Risk Assessment Qualification Course (Class is Full)
Scott Sjolander
Certified TRAQ Instructor

The TRAQ training course was created by the International Society of Arboriculture (ISA). This training opportunity is sponsored by the NJ Chapter of the ISA. It is hosted by the Morris Arboretum at the New Jersey Forest Service’s, Forest Resource Education Center, 495 Don Conner Blvd. in Jackson, New Jersey. The course will provide a high level of training for arborists, landscape architects, and landscape management professionals in the fundamentals of tree risk assessment. This qualification promotes the safety of people and property by providing a standardized and systematic process for assessing tree risk. TRAQ is a two-day course followed by a half-day examination that includes both a written and a field component. The course prepares the participant to take the TRAQ exam to become ISA Tree Risk Assessment Qualified. It is required that you attend the course and successfully complete the assessment examination in order to receive the ISA Tree Risk Assessment Qualification. The content of this course will focus on the following areas: tree biology and mechanics, tree inspection and assessment, data analysis and risk categorization, and risk reporting. The Tree Risk Assessment Qualification is valid for five years from the date the exam is passed. The qualification holder is required to retake the course and pass the exam every five years in order to maintain the qualification. To be able to register for the course and take the exam, you must have earned one of the following credentials:

- ISA Certified Arborist or BCMA
- A national certification or certificate in arboriculture
- Licensing or certification from an approved state program
- SAF Certified Forester
- ASCA Registered Consulting Arborist
- A degree in arboriculture, urban forestry, traditional forestry, or horticulture from an accredited college or university.

Participants will receive course materials two weeks prior to the start of class. Bring these materials with you to the class.

The class takes place at the New Jersey Forest Service Forest Resource Education Center, 495 Don Conner Blvd, Jackson, NJ 08527.

This course carries 15 CEUs for ISA certified arborists (S=7, P=3, M=5).

Registration is CLOSED.

Thursday and Friday, March 22, 23- 8:00 a.m.- 5:00 p.m. &
Saturday, March 24- 8:00 a.m. - 12 noon

Fees: ISA Members: $650 (includes lunches)
Non ISA Members: $750 (includes lunches)
Exam retake only $150

All participants must complete THIS FORM and return to Morris Arboretum to take the class as soon as possible after payment is made.
Thursday, March 22, 2018 at 8:00 AM
Attendees: 1 $ 650.00 ea.
Attendees: 1 $ 750.00 ea.

Diagnosis and Identification of Plant Diseases
Richard Buckley
Manager, Plant Diagnostics Laboratory, Rutgers University

This session will present an overview of the major causes of abiotic and biotic plant disorders in North American woody stemmed plants. Biotic plant problems are caused by living organisms, such as fungi, bacteria, viruses, nematodes, and animals. Abiotic disorders are caused by nonliving factors, such as drought stress, sunscald, freeze injury, wind injury, chemical drift, nutrient deficiency, or improper cultural practices, such as overwatering or planting too deeply. Unfortunately, the damage caused by these various living and non-living agents can appear very similar. A systematic approach to the identification of environmental, fungal, and bacterial causes of plant disorders and diseases will be considered along with common sense approaches to their control.

This course carries 5.5 CEUs for ISA certified arborists (S=3, P=1, M=1.5).

Friday, March 23 - 9:00 a.m. - 4:00 p.m.
Fee: $140 (includes lunch)
Friday, March 23, 2018 at 9:00 AM
Attendees: 1 $ 140.00 ea.

It's Alive! Study the Living Soil Beneath our Feet
Eric Moore
The Martha S. Miller Endowed Urban Forestry Intern, Morris Arboretum

Mark Highland
President, The Organic Mechanic Soil Company, LLC

Soils provide essential ecological functions and services that promote human well-being. From agriculture and groundwater purification, to climate regulation and erosion control, soil health plays a monumental role in shaping society. However, invasive species, shifting land use, climate change, and other anthropogenic stressors, threaten soil health globally. In order to better manage the soils of our gardens, parks, forests, and even urban centers, we need to better understand soil biology and the complexities associated with soil systems. This one-day course serves as an introduction to the history of soil science from its early beginnings through to the modern era with an emphasis on insights gleaned from case studies. Eric holds a master’s degree in soil ecology and has extensive experience working in the fields of forest and agricultural soil science. Mark received his degree from the Longwood Graduate Program focusing on compost and potting soil, and started The Organic Mechanic Soil Company, LLC in 2006.

This course carries 5.5 CEUs for ISA certified arborists (S=4.5, P=1, M=0). LA-CES credits for landscape architects have been applied for.

Thursday, March 29 - 9:00 a.m - 4:00 p.m.
Fee: $140 (includes lunch)
Thursday, March 29, 2018 at 9:00 AM
Attendees: 1 $ 140.00 ea.

Emerald Ash Borer Workshop
Joel Spies
President, Rainbow Treecare Scientific Advancements

Shannon Herbst
Mid-Atlantic Territory Manager, Rainbow Treecare Scientific Advancements

The spread of emerald ash borer (EAB) into eastern Pennsylvania and New Jersey is a major challenge and opportunity for Philadelphia area arborists to preserve worthwhile ash trees in the landscapes we manage. One of the most efficient and environmentally safe methods of pesticide application is microinjection technology that allows you to apply systemic products to targeted trees in a responsible manner. Microinjection is also an effective way to deliver a host of other fungicides and plant health care products. A key factor in achieving safe and effective applications is a thorough understanding of the injection techniques and products that are available. This one-day workshop will provide you with a background in microinjection and an overview of all of the available products and equipment on the market. You will have a hands-on opportunity to practice an application on an ash tree.

This course carries 5.5 CEUs for ISA certified arborists (S=2, P=1.5, M=2).

Wednesday, April 4 - 9:00a.m. - 4:00p.m.
Fee: $140 (includes lunch)
Wednesday, April 04, 2018 at 9:00 AM
Attendees: 1 $ 140.00 ea.

Tree Health Assessment
Jerry Bond
Principal Consultant, Urban Forest Analytics
LLC, and Author, Urban Tree Health
If you have ever struggled with trying to understand
and describe the condition of a tree in a report or
a proposal, this course will be of assistance. Dr.
Jerry Bond is a principal in the firm Urban Forest
Analytics and the author of Urban Tree Health. He
will explain his new field methods for obtaining
quick and reliable estimates of tree condition and
tree load potential. This involves the use of six
specific parameters to help quantify the health of
a specific tree. This methodology helps provide a
more robust evaluation when doing level 3 tree
inspections. Participants will learn an easy-to-use
technique to determine the load potential for trees
and their parts. An outdoor exercise will put this
knowledge into practice, and will be followed by
a discussion of actual case studies. This course
carries 5.5 CEUs for ISA certified arborists (S=2,
P=1.5, M=2).
Thursday, April 5 Fee: $140 (includes lunch)
9:00a.m. – 4:00p.m.
Thursday, April 05, 2018 at 9:00 AM
Attendees: 1 $ 140.00 ea.

Managing Forest Fragments
Ken LeRoy
Arborist, John B. Ward & Co Tree Experts

Fragmentation of natural areas due to urbanization results in isolated forest fragments. Cut off by highways, rail lines, and commercial and residential developments, these patches of green infrastructure surrounded by the built environment are often neglected. These disturbed landscapes can be managed to develop a healthier, safer, functioning forest. The potential for the earth to support optimum tree growth and carbon sequestration can be realized by following basic forestry practices including vine control, preferred species selection, thinning for fewer more efficient trees, considering soil health, wildlife enhancement, and carving out access for people. All the earth is a garden and requires tending. Come and learn how to grow good woods in our community forests.

This course carries 5.5 CEUs for ISA certified arborists (S=2, P=1.5, M=2).

Tuesday, April 10 - 9:00 a.m. - 4:00 p.m.
Fee: $140 (includes lunch)
Tuesday, April 10, 2018 at 9:00 AM
Attendees: 1 $ 140.00 ea.

Introductory Tree Climbing
Zach Shechtman
Owner, Shechtman Tree Care

Brian Hutchinson
Arborist, Shechtman Tree Care

This class provides an introduction to tree climbing and features the opportunity to have supervised climbing instruction in trees. It is ideal for tree companies looking to advance promising grounds staff, or for gardeners and landscapers who want to add new skills. Effective methods for climbing trees will be demonstrated by instructors and practiced by students. Safety rules will be reviewed and stressed. Students will learn how to tie critical knots regularly used by arborists. Included in the fee, each student will receive a copy of The Tree Climbers Companion by Jeff Jepson, a great resource for climbers. If you have them, bring an arborist’s rope and saddle, a hard hat, gloves, safety glasses to the class. Wear boots, long pants, and dress for the weather. We will meet at Bloomfield Farm. Look for the paved road across Northwestern Avenue from the public garden entrance. Park in the lot and follow the signs to the Horticulture Center.

This course carries 16.5 CEUs for ISA certified arborists (S=0, P=16.5, M=0).

Wednesday, Thursday, and Friday April 11, 12, 13- 9:00a.m. - 4:00p.m.
Fee: $525 (includes lunch)
Wednesday, April 11, 2018 at 9:00 AM
Attendees: 1 $ 525.00 ea.

Fundamentals of Garden Mapping and Surveying
Wayne Cahilly
Owner, Cahilly's Horticultural Services, LLC

This class will introduce the garden manager, facilities manager, or gardener to the tasks required to precisely map plants and infrastructure within a garden. Techniques will range from proper use of tapes, to the benefits and pitfalls of mapping-grade GPS devices. Terrestrial surveying equipment and techniques will be introduced and demonstrated. Students will leave with a better understanding of the techniques, equipment, costs of various mapping methods, and the level of staff commitment necessary to achieve their required level of precision. With nearly 30 years of experience, Wayne brings a wide range of skills, techniques and experience to the subject of garden mapping.

This course carries 5.5 CEUs for ISA certified arborists (S=2, P=2, M=1.5).

Friday, April 13 - 9:00a.m. - 4:00p.m.
Fee: $140 (includes lunch)
Friday, April 13, 2018 at 9:00 AM
Attendees: 1 $ 140.00 ea.

Tree Appraisal Workshop
James Koman
Consulting Arborist

Assigning a fair monetary value to individual trees is an important skill for municipal and consulting arborists, as well as anyone who is responsible for managing a property, park, or arboretum. This workshop focuses on the theory and practice of the appraisal of woody plants. James will review the various approaches to valuation that are currently available and how to determine which is the most suitable choice. The primary focus will be on the Cost Approach and the Trunk Formula Method for determining monetary value. The outdoor component of the workshop involves simulated appraisals on several trees in the Arboretum with hands-on instruction. An analysis of each problem will follow. The instructional material follows the 9th edition of the Guide for Plant Appraisal (International Society of Arboriculture) as prepared by the Council of Tree and Landscape Appraisers (CTLA) and reflects current understanding and practice in arboriculture. Come prepared to be outside.

This course carries 6.5 CEUs for ISA certified arborists (S=2, P=2.25, M=2.25).

Thursday, April 19 - 8:30a.m. - 4:30p.m.
Fee: $140 (includes lunch)
Thursday, April 19, 2018 at 8:30 AM
Attendees: 1 $ 150.00 ea.

2017 Morris Arboretum · 100 E. Northwestern Avenue, Philadelphia, PA 19118 · 215-247-5777