Q.Crested Growth On Plumaria
What is the crested or crown looking growth on a plumaria called?

GKH_Susan
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on April 15, 2022
It's called fasciation or cresting of stems. Here is a photo similar to yours:
https://gms.ctahr.hawaii.edu/diseasespests.aspx?moid=55448
https://www.gardeningknowhow.com/plant-problems/environmental/fasciation-in-flowers.htm
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