Several fungi cause leaf spots on Carpinus. Leaf spots are not serious so control measures are usually not needed. Canker caused by several fungi causes infected branches to dieback and entire trees die if the trunk is infected and girdled. Severely infected trees can not be saved and infected branches are pruned out.
Powdery mildew causes a white powdery growth on the leaves.
The disease is not common on Carpinus. This information is for educational purposes only. References to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned. This information becomes public property upon publication and may be printed verbatim with credit to MSU Extension. Reprinting cannot be used to endorse or advertise a commercial product or company.