Will Japanese beetles eat dipladenia? I saw some at my neighbours and was thinking of them in lieu of four o'clocks.
Certified GKH Gardening Expert
They are not picky. They will eat, absolutely, anything. They have preferences for certain plants and trees but nothing is safe.
Good insect control practices will do wonders here.
These articles will help: https://www.gardeningknowhow.com/special/organic/what-are-organic-pesticides.htm