Prevent the insect infestations by keeping trees healthy with regular fertilization. Regular inspections of the trunk and branches are suggested for early detection of scales. Control scales with properly labeled insecticides when the crawlers are active. Identify the specific scale involved to time the sprays properly. Certain caterpillars can be controlled with sprays of Bacillus thuringiensis.
Insect identification allows proper spray recommendations to be made.
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. Please read our disclaimer for important information about using our site.