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Welcome to the Consulting Arborist Magazine, the official magazine of the Consulting Arborist Society.

  • Plant Health

    Trees and Clean Urban Air

    By Dr. Rob Mackenzie, 24 July 2017

    This week, we are teaming up with the team at TDAG to help them with some research.  Dr. Emma Ferranti is exploring the decision-making process when it comes to selecting trees and other green elements in urban settings, with specific reference to air quality.  She explains below.

    This is such an important issue that we are devoting all of this week’s magazine to her work, with an article by Professor Rob Mackenzie attached to provide some perspective.  Most weeks, only members of CAS can access the full magazine.  This week, we make it available to all of you, and include a link to the forum where it originally appeared, ‘The Conversation’.


    Are you interested in planting trees or other green infrastructure to improve air quality? Do you think you have the information you need to make decisions about planting green infrastructure for air quality? What do you need to know to make the best decisions? Dr Emma Ferranti at the University of Birmingham is canvassing opinions on this topic as part of a NERC Knowledge Exchange Fellowship. We want to make sure that recent research in this area by universities and research institutions is available to practitioners, but more importantly, that the research meets practitioner needs. If you have thoughts on the questions we have posed, or thoughts on this topic more generally, please contact e.ferranti@bham.ac.uk . All responses are welcome, whether they be one sentence, bullet points, or a short paragraph. All responses will be treated anonymously – if in doubt please ask.


    There is an on-going debate about the role that trees may play in improving urban air quality, with some studies challenging the consensus.  Professor Rob Mackenzie, Professor of Atmospheric Science at the University of Birmingham shares some thoughts in an article  written for The Conversation.


  • Tree News

    Fungi of Kew Gardens

    By Laura Martin, 17 July 2017

    This week, we introduce a new author as Laura Martin, wife of CAS member, tree enthusiast and tree manager at Kew Gardens, shares her observations on fungi, and some of those she has found at Kew.


    Bookings are now being taken for the autumn programme of CAS courses and the 2017 CAS AGM.  Details of the AGM programme will follow soon.


    Tree Charter blogs from this week included

    On Wednesday 12th July, we posted a blog about how the creation of a book on trees (The Shady Side of Town. Reading's Trees) brought the community together through engagement activities. https://treecharter.uk/2017/07/12/12554/

    -          On Friday 14th July, we posted a blog by Dr Laurence Jarvis, head of conservation at Froglife, on trees and terrestrial toads https://treecharter.uk/2017/07/14/trees-terrestrial-toads/

    Finally, to Laura Martin and her Fungal foray.

    The Royal Botanic Gardens, Kew are home to some 14,000 trees.  Much of the focus is usually on these trees.  However, in recent years, there has been an increasing appreciation for what happens underground.  This includes fungi, which may be regarded as an often unseen treasure.  Can one have favourites?  


  • Tree News

    The Burghley Park Oak

    By The Ancient Tree Forum, 10 July 2017

    This week, we can announce the date for the next Amenity Tree Valuation course, led by Dr. Jon Heuch.  It will be at Sparsholt College in Hampshire, and we hope that some of the arboricultural students will be able to sit in on the event.  It will be on 2nd and 3rd November.  More details to follow.  To book your place, ….


    A reminder that if you wish to have any items included on the agenda for the 2017 CAS AGM, they will be needed by the end of next week.  Places remain on the day, being hosted by Bartlett’s Research Laboratory.


    Perennial had an entry at the 2017 RHS Hampton Court Palace Flower Show, and were delighted to be awarded the Silver Gilt…. http://mailchi.mp/perennial.org.uk/e-news-june-hcpfs-special

    CAS is part of the Tree Charter project being run by the National Trust.  Today, they feature a blog I wrote recently on access to public places and the challenges this can bring.


    Finally, we have a feature from the Ancient Tree Forum…


  • Business Advice

    TPO date announced (and the business blog)

    By David Walker, 04 July 2017

    This week, I am delighted to be able to announce the date of the next CAS course.  Richard Nicholson will be delivering his well-regarded seminar on Tree Preservation Orders.  This will be at Sparsholt College on Monday 23rd October.  More details will follow.


    Perennial have sent their latest e-news, which is available here…..


    Finally, as it is the first Monday of the month, we have the business blog.  Solicitor David Walker shares on the principles of taking a client to court in order to settle an outstanding invoice, without using a solicitor.  David explains that to win a court case, all you have to do is…..


  • Tree News

    Tree Statics in action

    By Kevin Martin, 26 June 2017

    This time last week, I was in a classroom in sultry heat listening to Dr. Jon Heuch sharing on Excellence in Report Writing. Given the vast range of experience of delegates and the heat, Jon did a thoroughly excellent job in engaging his audience and informing us. I am hoping to hear more from Jon later this year on his next course.

    Next week, we will be announcing the date and venue of the next Tree Preservation Orders course, led by the excellent Richard Nicholson. The aim is to provide courses across the UK, so please do let me know if you have a suitable venue and a group interested in one of our courses. The date and venue for the AGM are confirmed, at Bartlett’s Reading Laboratories, on Friday 29th September 2017. The agenda for the day, and for the AGM, will be circulated shortly.

    Finally, Kevin Martin, Tree Manager at RBG Kew, shares some thoughts about a pioneering safety management approach he has been trialling at Kew.

    As the Tree Manager at RBG, Kew, I am responsible for the management of a collection of some 14,000 trees. Many of these are historically, botanically and biologically important. Over the past months, I have shared about some of the individual trees that have become special to me. This month, I am going to share about a management issue.

    One of the special benefits of working at Kew is that, as a centre of excellence in research, I get to hear of the pioneering work of leading researchers. This month, I am going to share with you about work on the use of tree statics. This....