Forestry Commission Tree Diseases Guide

Ash Dieback

The Forestry commission have recently published a guide for woodland owners on managing ash in woodlands in light of ash dieback.  The guidance will help landowners and woodland managers maintain the benefits of ash trees, while avoiding health and safety risks from dead and dying trees.

They have also produced a short video to briefly talk you through the key points which is available on the Forestry Commission Youtube page. 

Tree disease database

This is hosted on the Forestry commission website top tree diseases page.

Elm zigzag sawfly

First recorded in Europe in 2003, elm zigzag sawfly has spread and was identified in Britain in 2017. The species specialises on elms (Ulmus spp.) and appears to feed on all three elms commonly found in Britain. 

Larvae feed on the elm leaf tissues, producing the characteristic ‘zigzag’ pattern of feeding damage. The pest was first identified in Surrey in 2017 but in June this year, further reports came in from across a wide area of South East England and the East Midlands. To find out more visit the Forest Research website, or report sightings through Tree Alert

Oak processionary moth – new national measures

On Tuesday 21 August, new legislation came in to force to protect oak trees against the imminent danger of introducing oak processionary moth (OPM) into the OPM protected zone (PZ) through import and movement.

The legislation prohibits the movement of oak into the PZ unless specific conditions are met. To find out more visit the GOV.UK website.