If you reside in an area where cicadas are projected to be prominent, we highly suggest you cover your plants with a good netting fabric. You do want to ensure that the insects cannot penetrate the openings, but that the netting allows ample sunlight and air to circulate.
Cicadas should emerge from May through June, but don’t keep netting on your plants any longer than necessary. The reason for this is that your plants will continue to grow and thrive, and netting can hinder this over a long period of time.
If you will be planting any new flowers, shrubs, or plants, cover the plant with a tube of netting that goes over the plastic container. It can remain until the cicadas are no longer in your area or deemed safe to remove.