Answer: Shrivelled leaves do not necessarily indicate an insect pest but could be signs of a water stress problem on your osmanthus. Check the plant thoroughly for signs of insect pests, even opening any curled or shrivelled leaves. If you find none, the problem is with either under or over watering or from pests that have done their damage and then left the area. If you find insects, have them identified so you can use the proper product to control them.
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