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Tree Pests, Diseases and Disorders ONLINE




Chris Knapman

6 hours

Places Available

2 days (09:00 - 12.30) 

Exc. VAT Inc. VAT

Course Objectives:

By the end of this course you will be able to:

• Understand what a healthy tree requires and factors that can disrupt normal function.
• Follow a repeatable, methodical approach to examining trees.
• Make a diagnosis based on your observations.
• Identify sources of further information/help.
• Understand how to provide management advice.
• Understand the need for biosecurity and implement good practice during the course of your work.

Presented by Jim Mullholland, Arboricultural Association Technical Officer   

This course entitles you to CEUs; see this link 

Course Content:

This newly revised course is delivered online (via Zoom) in two morning sessions.

Session 1 covers:

  • A healthy tree
  • Invasive species
  • Examining the tree
  • Making a diagnosis
  • Using a reference book
Session 2 covers:
  • Example pest, diseases or disorders,
  • Management advice
  • Biosecurity

The instructor will set two tasks to be completed between the two sessions. Please ensure you allow sufficient time to complete this (1 hour).

Printed materials provided: (posted at least one week prior to the course):

• AA's: Tree Pests and Diseases - An Arborists' Field Guide
• AA's: Diagnosis of Ill Health in Trees

Via Zoom – Please ensure that you have either downloaded the Zoom App, or have an account, and that the audio and camera are in working order. See Zoom Tips here
Session 1 - Tuesday 18th October 2022, 09.00 – 12.30
Session 2 - Tuesday 25th October 2022, 09.00 – 12.30


Arboricultural Association attendance certificate

Module Pre-requisites:


Terms of Cancellation or Amendments to details

  • We reserve the right to cancel courses and refund applicants if there is insufficient demand.
  • A FULL charge will be applied to any booking cancelled less than 10 working days before the event.
  • A £30 administration charge may be applied to changes made to bookings that have been received and acknowledged.

For all course bookings outside the UK and Europe, please email