Disclaimer: The views and opinions expressed in this article are those of the author and do not necessarily reflect the views of the Arboricultural Association.

Share this story


#ARBatwork #ArbMatters #PledgeLessPlastic & 12 Faces of Arb 1987 storm 2 Rope 2018 30 Under 30 3ATC 3ATC UK Open 50th annual AA AA award AA Awards Aboricultural Association Accident accreditation advice AFL aftercare AGM Agrilus Biguttatus aid air quality Alert Alex Kirkley All Party Parliamentary Group on Horticulture amenity Amenity Conference Anatomy Ancient Tree Forum Annual Awards APF APF 2020 app APPGHG application Appointment apprentice apprenticeship Apprenticeships Approved Approved Contractor Approved Contractors ARB ARB Approved Contractor ARB Approved Contractors ARB at work ARB Magazine ARB Show arb training ArbAC ARBatwork ArbCamp Arbor Day Arboricultural Association Arboriculture arborists Arbsafe Ash Ash Archive ash dieback Asian Hornet Assessments atf ATO Australia Autumn Review award Awards Barcham Trees Bark Beetle Bartlett Bartlett Tree Experts bats beetle beyond ism Bill Matthews biochar biodiversity biomechanical biosecurity Book Prize Book Shop Books Bookshop boundaries branch Branches brand Brexit bs5837 Budgeting Tool bursary business Call for Abrstacts Call for papers Campout Canker stain of plane carbon career Cavanagh CCS Cellular Confinement Cellular Confinement Systems CEnv CEO Ceratocystis Ceratocystis platani chainsaw chalara charity Charles charter Charter for Trees Chartered Environmentalist chelsea Chelsea Flower Show Claus Mattheck climate climate change climber climbing Cofor Colleges committees competition competiton conference Confor conifers conservation Consultant consultation Continuous Professional Development Contractor Contractors Cornwall Cornwall Branch Coronavirus Coroner Council Countryside Countryside Code Countryside Stewardship Course for beginners COVID-19 CPD cross industry news Crown & Canopy Cryphonectria parasitica Cumbria DART Date for your diary deadwood death debate Debt defra Design Devon Director disease diversity document donate dothistroma downloads draft Dutch elm EAC East Anglia ecology Economic Report economy Ecotricity education EFUF Election elections Electricity Elm yellows Emerald Ash Borer England England Tree Action Plan England Tree Strategy English Elm environment environmental EPF equipment Europe European Arboricultural Council European Forum on Urban Forestry European Wood Pastures Event exeter Exhibitors Fall from Height Fatal Fatality felling Fellow Fellow Members Fera Field Trip Finance Fine firewood First Aid FISA flood flooding for Forest Research forestry Forestry Commission forests freelancers FSC Fund4Trees funding fundraiser fungal fungi Future Flora Futurebuild gardening GDPR Geocells Gold Medal Gov.uk government grant grants Grapple Saws Green Brexit Green Infrastructure Green Infratructure Guarantee guidance Guidance Note Guidance Note 2 guide guides Hazard Tree Health heart-rot Hedgerow hedges Helliwell Help Henry Girling Henry Kuppen History HMRC HOMED Homeworking Honey Brothers honours Horse Chestnut HortAid horticulture horticulturists HortWeek housing HRH HRH Prince Charles HS2 HSE HTA ICF ICoP identification Immigration import industry Industry Code of Practice industry skills Infographic InfraGreen Initiatives Inspiration Insurance Intermediate Tree Inspection International Urban Forestry Congress International Women’s Day International Year of Plant Health Investigating Tree Archaeology Conference Ips typographus Irma irrigation ISA iso i-Tree IUFC IWD21 Job job opportunity judgement JustGiving Karabiner Kew Kit land-based Landsaping Landscape Institute Landscape Show landscaping Lantra law Leaf Minor Lectures legal legislation Letters Liability licence London longevity LTOA Magazine manifesto maple Mayor of London MBE Melbourne Member Benefit Membership mentor Midlands moth' motion Myerscough NASA National Geographic National Hedgerow Week National Tree Safety Group National Tree Week NATO Natural England NatureScot Netherlands New Year’s Honours News NHS nominations Northern Northumberland Notice notification NTIS NTOA NTOC NTSG Nurseries oak 'oak Oak Processionary Moth Oak-boring Beetle obituary Observatree occupation online opm Padua Papua parks parliament Perennial Pests & Diseases Pests and Diseases petition photo Phytophthora planning Planning Law Plant Health planting Plantsman Pledge Plumpton College policy poll Poster Power PPE Preston Twins Prince Charles Prince of Wales processionary Product Recall Professional Members prosecution Protect and Survive protected tree protection Qualifications Queen’s 70th Jubilee Quotatis ramorum RC Reg Harris Registered Registered Consultant Registered Consultants Rememberance Day renewal REnvP Report Rescue research Research grant Resilience response results retrenchment review RFS rhs RHS Chelsea Flower Show Ride for Research Ride4Research rigging Rodney Helliwell rogue tree surgeons Royal Forestry Society RSFS Safe Working Practice Safety Safety Bulletin Safety Guides Saftey Sale school Scotland Scotland Branch Scottish Branch SDG Accord security seminars Share Sheffield Show Sierra Leone Site Guidance skills skills survey SocEnv soil soils South East South West SRT SRWP staff Standards statement Stationary Rope Stationary Rope Technique statutory STIHL strategy student Student Book Prize Student Conference Study Trip Sub-contractors Supporter survey Sustainable Soils Alliance Sweet Chestnut sweet chestnut blight symposium T Level T Levels Tatarian maple TDAG technical guide Technical Guides Technical Officers Technical Team Technician Members Technology Ted Green tender Thames & Chiltern The Arboricultural Association The Queen’s Green Canopy The Woodland Trust Thinking Arbs Thinking Arbs Day Timbersports Tony Kirkham Tools top-handled chainsaws,Elcoat, TPBE4 TPO Trading Standards trailblazer training transport Tree Tree Care Tree Champion Tree Council Tree Fayre Tree Health Tree Health Week Tree Inspection tree loss tree management Tree of the year Tree Officer Tree officers tree planning Tree Planting Tree Protection tree register Tree Risk Tree Shears tree species Tree Supply Tree Surgeon Tree Surgeons Tree Week Tree Work at Height Tree Workers Zone Treeconomics tree-felling TreeRadar trees trees' Trees & Society Trees, People and the Built Environment trust' trustee Trustees TrustMark Two Rope two-rope UAG Uitlity UK favourite ukas UKWAS urban urban forest Urban Forestry Urban Tree Challenge Urban Tree Challenge Fund Urban Tree Cover Urban Tree World Cup urban trees Utility Arboriculture Group UTWC vacancy VETcert veteran trees video Videos Virtual ARB Show volunteer voting VTA WAC Wales Warning Watering watering solutions Webinar webinars website Western Westonbirt Wharton White Paper WIA Witley Women Women in Arb women in arboriculture woodland Woodland Carbon Code Woodland Carbon Guarantee woodland trust woods Workshops World Environment Day Xylella young young arborists Young People’s Breakfast Event zoo

Tree Health Week

Author:  Arboricultural Association
Last Updated:  16/10/2020
Tree Health Week Logo

5th – 11th October 2020

International Year of Plant Health 2020

The number of pests and pathogens threatening the health of our trees has steadily increased over the past fifty years. In the United Kingdom tree planting is higher on the agenda than ever before and our understanding of tree health is critical.

The first ever tree health week aims to raise awareness of the threats our trees face and provide knowledge on some of the key threats, present and future, and how you can spot them.

1970 – 2020 Tree Pests and Diseases Discovered

Tree Health Week is headlined by a series of live daily webinars featuring top international speakers. There is also a wealth of related resources for you to use and share.

Free, live webinars every day!

Tree Health Week Speakers
Tree Health Week – Session 1

Session 1

Aired on Monday 5 October

With Lynne Boddy, Chris Wright and David Humphries

Tree Health Week kicked off with a focus on trees and fungi. Lynne Boddy discussed the complex relationships between fungi and trees, followed by Chris Wright and David Humphries, who delivered a presentation related to their upcoming publication 'Fungi on Trees: A photographic reference.'

Watch Now

Pre-order your fungi book

Tree Health Week – Session 2
An Arboricultural Association Member Benefit

Session 2

Aired on Tuesday 6 October

With Katherine O’Donnell and Mike Raupp

You can watch this video now as a member benefit. Simply log in to your membership area and click on the Tree Health week section.

Login to watch

Tree Health Week – Session 3
An Arboricultural Association Member Benefit

Session 3

Aired on Wednesday 7 October

AQT Tree health special

With Lucio Montecchio, Alice Muchugi and Vaibhav Raje

Login to watch

Tree Health Week – Session 4
An Arboricultural Association Member Benefit

Session 4

Aired on Thursday 8 October

With Nicola Spence and Dr Glynn Percival

Login to watch

Tree Health Week – Session 5

Session 5

Aired on Friday 9 October

With Ana Pérez-Sierra, Greg Packman and Joan Webber

Watch Now

Tree Health Week resources

Pests and Pathogens Poster

Interactive version

Reporting tree pests and diseases


TreeAlert Logo

If you have spotted signs of dangerous tree pests and diseases, then you can submit a report using the Forestry Commission TreeAlert tool.

How to Report


Observatree Logo

Observatree uses citizen science to help spot new pest and disease threats to UK trees. Check out their excellent resources and get involved.

Find Out More


Forestry Commission Biosecurity

Keep it clean

Keep it clean

People working in the arboriculture, forestry and landscaping industries are considered a particularly high-risk group for their potential to spread tree pests and diseases.

Pests and Disease resources

Biosecurity eLearning

Biosecurity resources

Biosecurity for Arborists

(Arboricultural Association Guidance Note)

Best practice guidance for Arborists working in any role in arboriculture and environmental sectors.

UK Plant Health Information Portal

An online hub for plant health information, data and resources

View portal

Specific pest and disease resources

Ash Dieback Guidance for tree owners, managers, contractors and consultants

Find Out More

Ash Dieback: A Guide for Tree Owners

Find Out More

London Tree Officers Association (LTOA) Guides

Canker Stain of Plane


Massaria Disease of Plane

Find Out More

Promoting Tree Health Week

If you wish to help promote Tree Health Week and raise awareness, please download one of the packs below and use to promote on your social media platform or website.