Report tree pests and diseases here

Britain’s trees are under unprecedented threat from new pests and diseases. We are particularly interested in identifying problems with Ash, Oak, Pine, Spruce and Horse Chestnut trees. You can help by being aware of the symptoms of serious threats and reporting them for further investigation using this form from the Forestry Commission.

A

Alder (Alnus) – Asian longhorn beetle | phytophthora alni

Apple (Malus domestica) – Citrus longhorn beetle

Ash (Fraxinus excelsior) – Asian longhorn beetle | Chalara ash dieback | Emerald ash borer

B

Beech (Fagus) – Asian longhorn beetle | Citrus longhorn beetle | Phytphthora kenoviae | Phytphthora ramorum

Birch (Betula) – Asian longhorn beetle | Citrus longhorn beetle

C

Cedar (Cedrus) – Pine wood nematode

Cherry (Prunus) – Asian longhorn beetle | Citrus longhorn beetle

Corsican pine (Pinus nigra) – Dothistroma needle blight

Cypress tree (Cupressus) –  no significant threats

D

Douglas fir (Pseudotsuga menziesii) – Phytophthora ramorum | Pine tree lappet moth

E

Elder (Sambucus nigra) – no significant threats

Elm (ulmus) – Asian longhorn beetle | Citrus longhorn beetle | Dutch elm disease

F

Field maple (Acer campestre) – no significant threats

G

Grand fir (Abies grandis) – no significant threats

H

Hawthorn (Crataegus monogyna) – no significant threats

Hazel (Corylus) – Asian longhorn beetle | Citrus longhorn beetle

Hornbeam (Carpinus) – Asian longhorn beetle | Citrus longhorn beetle

Horse chestnut (Aesculus hippocastanum) – Asian longhorn beetle | Citrus longhorn beetle | Horse chestnut leaf miner | Phytphthora ramorum

J

Juniper (Juniperus communis) – Phytophthora austrocedrae

L

Larch (Larix) – Phytophthora ramorum | Pine wood nematode | Pine processionary moth

Lawson cypress (Chamaecyparis lawsoniana) – Phytopthora austrocedrae | Phytophthora lateralis

Lodgepole pine (pinus contorta) – Dothistroma needle blight | Pine wood nematode | Pine processionary moth

M

Maple (Acer saccharum) – Asian longhorn beetle | Citrus longhorn beetle Sweet chestnut blight

Mountain ash (Sorbus) – Asian longhorn beetle

N

Noble fir (Abies procera) – no significant threats

Norway spruce (Picea abies) – Spruce bark beetle | 8-toothed spruce bark beetle | Pine tree lappet moth | Pine wood nematode

O

Oak pedunculate (Quercus robur) –  Acute oak decline | Asian longhorn beetle | Sweet chestnut blight | Oak pinhole borer | Oak processionary moth |Phytophthora kernoviae

Oak sessile (Quercus petraea) – Sweet chestnut blight | Oak pinhole borer | Oak processionary moth

Oak turkey (Quercus cerris) – Phytphthora ramorum

Oak holm (Quercus ilex) – Sweet chestnut blight | Oak pinhole borer | Oak processionary moth | Phytophthora kernoviae

P

Pear (Pyrus) – Citrus longhorn beetle

Plane (Platanus) – Asian longhorn beetle | Citrus longhorn beetle

Plum (Prunus) – Asian longhorn beetle

Poplar (Populus) – Asian longhorn beetle | Citrus longhorn beetle

R

Rowan (Sorbus aucuparia) – no significant threats

S

Scots pine (Pinus sylvestris) –Dothistroma needle blight | Pine tree lappet moth | Pine wood nematode

Sitka spruce (Picea sitchensis) – Spruce bark beetle | 8-toothed spruce bark beetle | Pine tree lappet moth | Pine wood nematode | Phytophthora ramorum

Sweet chestnut (Castanea sativa) – Sweet chestnut blight | Oriental chestnut gall wasp

Sycamore (Acer pseudoplatanus) – Asian longhorn beetle

W

Western hemlock (Tsuga heterophylla) – no significant threats

Western red cedar (Thuja plicata) – no significant threats

Willow (Salix) – Asian longhorn beetle | Citrus longhorn beetle

Y

Yew (Taxus baccata) – Phytophthora lateralis

Last updated: 25th January 2016

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Post Author: LondonArborist

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