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Identification
Nymphs hide inside frothy white 'cuckoo spit' on stems; adults are stout, jumping brown-mottled bugs.
cycle
Life Cycle
Eggs overwinter on stems, nymphs hatch in spring and develop within foam masses before emerging as adults in summer.
warning
Damage Signs
Nymphs suck sap from stems, generally causing only minor distortion; mainly a cosmetic and monitoring concern as some species can carry plant pathogens.
healing
Treatment
Wash off foam and nymphs with a strong water jet. Rarely needs chemical treatment given minor damage.
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Prevention
Tolerate light infestations; keep plants healthy and monitor during spring when foam masses appear.