Zelkova-Stem Cankers

Latest revision: 
March 2023

Note Several nursery plants with stem cankers have been sent into the OSU Plant Clinic. It is suspected that most are due to cold injury followed by secondary invasion by various fungi (such as Fusarium lateritium or Phomopsis sp.), oomycetes (mainly Phytophthora spp.) or the bacterium Pseudomonas.