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
