my muhleys (ornamental grasses in landscaping) seem to have a cotton-like appearance on some of the grass fronds. is this mold or

Question

could it be mealy bugs

Answer 1

This article may help
https://www.gardeningknowhow.com/plant-problems/pests/insects/mealybugs-control.htm

Answer 2

This is likely Mealybug.

https://www.gardeningknowhow.com/plant-problems/pests/insects/mealybugs-control.htm