Michigan State University Extension
Ornamental Plants plus Version 3.0 - 00001280
11/12/99
ROSE INSECT PROBLEMS
Aphids cluster on growing tips of canes and are found
on stems (Vis. 1) and flower buds. They suck the sap and
large populations cause distorted growth.
Raspberry cane borer attack six to eight inches from
the cane tip. The larva bores toward the base of the cane
causing wilting and drooping above the injury. Prune off
canes 2 inches below the wilted area.
Rose chafer is a light tan beetle with red spindly legs.
It is often confused with Japanese beetle. The insect
feeds on the flowers. Pesticides do not give satisfactory
control. The insects occur in large numbers and those
killed by pesticides are soon replaced by insects from
surrounding areas.
Japanese beetle eats the flowers and foliage.
Rose Leafhopper feeds on the undersides of leaves causing
white stippling.
Rose leaf-tier (also known as oblique-banded leaf roller)
is a pale green caterpillar with a black head. It feeds
on flower buds and rolls and ties the leaves together with
silk.
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.
Related information.
Pesticide Recommendations
Aphids on Ornamentals
Spider Mites
Rose Chafer
Japanese Beetle
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This file was generated from data base ZZ on 01/19/00.
Data base ZZ was last revised on 11/12/99.
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