Cedars face damage from new pathogen

Forest Research's Tree Health Diagnostic & Advisory Service (THDAS) has warned of a fungus now blighting cedar trees in the UK.

Image: Jacinta Lluch Valero
Image: Jacinta Lluch Valero

The fungus, Sirococcus tsugae, has previously only been recorded in North America on hemlocks and Atlas and deodar cedars, but has now also been found on Atlas cedars in the UK and Germany.

Affected trees develop dead needles on shoots, cankers and gum exudation, the needles turning a distinctive pink colour, then brown.

THDAS head Dr Ana Perez-Sierra said: "We have been studying the distribution of the disease in the UK, trying to find out if other cedar species can also be affected. We also want to learn more about the life cycle of the fungus. We are still not sure if this fungus will manage to jump to the other cedar species over time."

Forest Research has said the fungus may cause considerable damage to high-value ornamental trees in public and private gardens, as well as losses on nurseries. It has published a webinar outlining its identification and impact, and has asked for possible sightings of the disease to be logged on its Tree Alert service.

Before commenting please read our rules for commenting on articles.

If you see a comment you find offensive, you can flag it as inappropriate. In the top right-hand corner of an individual comment, you will see 'flag as inappropriate'. Clicking this prompts us to review the comment. For further information see our rules for commenting on articles.

comments powered by Disqus

Read These Next

IoG Saltex 2016 - show preview

IoG Saltex 2016 - show preview

This year's Saltex will be looking to build on the success of last year by packing in a multitude of exhibitors and sessions over the two days, Sally Drury reports.

According To Dunnett ... Horticulture needed to 'colour in' green infrastructure

According To Dunnett ... Horticulture needed to 'colour in' green infrastructure

It's now around one year since work started on Sheffield's groundbreaking "Grey to Green" scheme, one of the largest urban green infrastructure projects in the UK.

Tree lifting, moving  and planting

Tree lifting, moving and planting

Successful relocations can see even big trees flourish while costing less than buying new stock, says Sally Drury.

Follow us on:
  • Facebook
  • LinkedIn
  • Twitter
  • Google +
Horticulture Jobs
More Horticulture Jobs

Contracts & Tenders

Sally Drury on professional gardening

Sally Drury

A monthly checklist of things to do and watch out for to keep your garden looking its best.