06/01/2025
Spittlebugs, also known as spit bugs, are easily identified due to their small, white, foamy nests which resemble drops of bubbly saliva.
๐In Spring, they are often seen on roadside ๐พgrasses and w**ds, you may also spot them in your garden, especially on your lavender, which is a favourite host plant.
๐ขThese green insects, approximately ยผ inch long, feed on plant sap (xylem specifically, unlike most insects that feed on the phloem) but generally do no real harm to their hosts. They have one life cycle, and once the nymphs (a phase in the insectโs life cycle, when they look similar to the adults but are smaller and donโt have wings) mature, their foam nests disappear.
Foam nests and some of the nymphs can be removed by hosing off the plant with water. ( Spray bottles with a sharp stream nozzle rather than spray mist also work. Use these to blast aphids off tooโ this way you wonโt harm beneficial insects as insecticidal soaps are indiscriminate. ๐๐๐ฆ
For west coast gardeners, Linda Gilkeson's book on Natural Insect, W**d & Disease Control is a great reference as is the University of Wisconsin-Madison Division of Extension article, Spittlebugs.
http://www.lindagilkeson.ca/books.html
https://hort.extension.wisc.edu/articles/spittlebugs/
๐๏ธ& ๐ท ๐ฑstudent VMG Shannon T.