
GKH_Susan
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on December 11, 2019
That can be caused by improper watering, insect pests or leaf scorch. This article should help identify the problem:
https://www.gardeningknowhow.com/ornamental/shrubs/oleander/oleander-leaf-curl.htm
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