Botanic Gardens Trust, Sydney, Australia

Plant info

Plant Disease Diagnostic Service

Ensuring sustainable plant health …

The Plant Disease Diagnostic Unit provides a range of plant pest and disease identification services to industry, government and private customers.

Please note that the PDDU will be closed from 19 December 2014 to 26 January 2015. We will be receiving and processing specimens until 8 December for the year 2014 - thank you. 

Range of services

  • disease diagnosis
  • pathogen isolation
  • fungal identification (including mushrooms and wood decay fungi)
  • advice and treatment recommendations
  • tree root identification


  • better management of pests and diseases
  • healthier plants
  • better management of parks and gardens
  • reduced use of chemicals

We specialise in

  • isolation of soilborne diseases
  • diseases of trees and palms
  • DNA identification of wood decay fungi

Plant Pathology staff


  • Edward Liew (Manager) - disease diagnostics, pathogen populations, fungal phylogenetics, tropical crop diseases, Fusarium, Phytophthora


  • Brett Summerell (Deputy Executive Director) - Fusarium, fungi of Australian native plants
  • Matthew Laurence (Senior Technical Officer)
  • Zoe-Joy Newby (Scientific Officer; temp)


Deliver specimens to

Plant Disease Diagnostic Unit
Royal Botanic Gardens & Domain Trust
Mrs Macquaries Rd
Sydney NSW 2000

Click here to find out about collecting and packaging your samples

Click here for service costs

Other contact details

Telephone: (02) 9231 8186
Facsimile: (02) 9241 1135