Psyllids do not overwinter in Colorado.
Outbreaks occur from flights of psyllids that migrate from southern states and Mexico.
Check potatoes and tomatoes each year for psyllid problems. If psyllids are detected, promptly treat affected plants with an insecticide. Adult psyllids are rarely found in Gardens unless collected with a sweep net or knocked onto a cloth placed around the base of the plants. They are orange-yellow and supported by small stalks. They are much smaller than the stalked, white egg produced by lacewings, which also are common in Gardens.