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528 Search Results for Pest and Diseases

  • Tools and Resources

    Dutch elm disease (Ophiostoma novo-ulmi)

     About Dutch elm disease in Great Britain
  • Tools and Resources

    Two-lined chestnut borer (Agrilus bilineatus)

     The larvae, or grubs, of two-lined chestnut borer beetles are a pest of oak trees (trees in the Quercus genus) and sweet chestnut ( Castanea genus).
  • Tools and Resources

    Neonectria canker of fir (Neonectria neomacrospora)

     Resources about Neonectria canker of Abies
  • Tools and Resources

    Ash dieback (Hymenoscyphus fraxineus)

     Present in United Kingdom Reportable – see ’Report a sighting’ below Scientific name of causal agent – Hymenoscyphus fraxineus Ash dieback is a highly destructive disease of ash trees (Fraxinus species), especially the United Kingdom’s native ash species, common ash (Fraxinus excelsior). It is caused by a fungus named Hymenoscyphus fraxineus (H. fraxineus), which is of eastern Asian […]
  • Tools and Resources

    Thousand cankers disease (Geosmithia morbida)

     Not present in UK Notifiable – see ‘Report a sighting’ below Scientific name of causal agent – Geosmithia morbida (G. morbida) Vector – Walnut twig beetle (Pityophthorus juglandis; P. juglandis) Picture: Ned Tisserat, Colorado State University, Bugwood.org Thousand cankers disease is caused by the fungus Geosmithia morbida. It is believed to be able to affect all species of walnut trees […]
  • Tools and Resources

    Phytophthora austrocedri disease of juniper and cypress

     Overview of plant pathogen Phytophthora austrocedri – symptoms and diagnosis of juniper infection.
  • Service

    Tree Health Enquiries – FAQ

     If you would like to report a pest, diseased tree or if you have an issue with a tree on your property or in your local area, then please read the following frequently asked questions, which help direct you to the relevant resource.
  • Tools and Resources

    Sweet chestnut blight (Cryphonectria parasitica)

     Present in UK Notifiable – see ‘Report a sighting’ below Scientific name of causal agent – Cryphonectria parasitica Picture: D. Rigling Sweet chestnut blight is a destructive disease of sweet chestnut trees (trees in the Castanea genus) caused by the ascomycete fungus Cryphonectria parasitica. It was formerly known as Endothia parasitica. It can also affect a few other plant species. Distribution The Cryphonectria […]
  • Tools and Resources

    Meeting Notes – 9th February 2023

     10.30 – 13.00, Thursday 9th February 2023 (via Microsoft Teams) Meeting chair: David Slawson (DS), Imperial College London Microsoft Teams Organiser: Lucy Turner (LT), Forest Research, Alice Holt Decisions and actions THCSN Business Actions/matters arising from July 2022 meeting Action (A1) DS to revise and circulate to members the revised template. Action (A2) All members to submit to LT texts for their projects. Action […]
  • Tools and Resources

    Dutch elm disease: History of the Disease

     Overview of the history of Dutch elm epidemics in Europe and Britain.
  • Tools and Resources

    Siberian silk moth (Dendrolimus sibiricus)

     Not present in UK Notifiable – see ‘Report a sighting’ below Scientific name – Dendrolimus sibiricus The larvae, or caterpillars, of the Siberian silk moth are a destructive pest of several species of conifer trees, some of which are grown in the United Kingdom for commercial and/or nature conservation purposes. It is also a human and animal health […]
  • Tools and Resources

    Woodland

     What is urban and peri-urban woodland and what are its benefits and practical considerations for its establishment and management