Utah State University Extension
Leafhoppers are common problems in home gardens and orchards throughout the state of Utah. There are many species of leafhoppers, several of which attack apples, roses, grapes, and potatoes. Most species overwinter in the egg stage in the bark of the host plant or among the fallen host plant leaves.
Karren, Jay B., "Leafhoppers in the Home Garden" (2000). All Current Publications. Paper 1340.