Search Observatree

Pests and diseases

Phytophthora austrocedri

First found in the UK in 2011, Phytophthora austrocedri is a fungus-like plant pathogen that can infect and kill juniper.
Pests and diseases

Red-necked Longhorn Beetle

The red-necked longhorn beetle larvae tunnel and feed under the bark of trees in the Prunus genus, such as cherries and plums.
Pests and diseases

Oak Lace Bug

The oak lace bug is a sap feeding insect, feeding on the underside of oak leaves causing them to lose their green colour. This can reduce growth and weaken the tree.
Pests and diseases

Bronze Birch Borer

Native to North America, this wood boring bupestrid beetle is a serious pest to birch trees.
Seasonal Survey Highlights - March to May 2025

Video • 00:10:36
Dothistroma Needle Blight - Determining invasiveness and risk

External link
Resource Library

Biosecurity
Asian longhorn beetle detailed information

External link
Laypersons Report Spanish

PDF • 3.29 MB
Video

Recording the location of a tree

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00:19:32