Volunteer activity to end of December 2018

Volunteer activity to end of December 2018

Volunteer activity

Number of hours recorded: 16,317.25

Number of tree health site surveys completed: 5219

Number of site surveys which found a pest or disease: 1,537

Number of site surveys which found a suspected Observatree priority pest or disease: 769

Priority pest and disease findings

  • Acute oak decline
  • Chalara dieback of ash
  • Dothistroma needle blight
  • European mountain ash ringspot virus
  • Elm zigzag sawfly
  • Great spruce bark beetle
  • Horse chestnut leaf miner
  • Oak processionary moth
  • Oriental chestnut gall wasp
  • Phytophthora austrocedri
  • Phytophthora lateralis
  • Sirococcus tsugae
Volunteer activity to end of December 2018

Other key findings

  • Gypsy moth
  • Juniper rust
  • tar spot
  • felted beech bark scale

Top 5 host trees: oak, ash, sweet chestnut, horse chestnut, birch

Top pest reported; oriental chestnut gall wasp.