Rose midge is most serious during the June and autumn blooming seasons. The upper end of the shoot turns brown or black and dies. The maggots may be found in the flower buds. Young rose slugs skeletonize the leaves and older rose slugs consume the entire leaf. The insects feed at night.
Mites cause loss of green leaf color.
Heavily infested leaves have a gritty feeling and are covered with fine webbing. 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.