Search Observatree
-
Pests and diseases
Mountain Ash Ringspot
First recorded in 1960, mountain ash ringspot is a virus that infects rowan trees and can lead to gradual dieback of the tree.
-
Blog
Host of the month - Sweet chestnut
For November's host of the month, Matt Parratt takes a look at Sweet chestnut, Sweet chestnut blight, and Oriental chestnut gall wasp.
Matt Parratt • 15 Oct 2026
-
Get in touch
Get in touch
A
-
Asian and citrus longhorn beetles field identification guide
PDF • 28.07 MB
-
Step 3 - History and distribution
Video • 00:10:58
-
Methods and technologies
Video • 00:15:49
-
About us
Brian Jones
A
-
Pests and diseases
Pests and diseases
A
-
About us
Networking
A
-
Minimising the impact of GSBB
External link