By Sharonjones
Ceredigion,
United Kingdom 
Hi please what is the white frothy stuff like spit on my lavender and other plants please will it kill them ? I think they call it cuckoo spit ..
30 May, 2014
Answers
Thank you it nice to no what it is I learnt something again today it amazing ...
30 May, 2014
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It is indeed Cuckoo spit. Inside you will find a small green insect, the larval stage of a thing called a frog hopper. Whilst it does suck sap, they actually do little harm to plants. If you do not like it them either wipe it off with your fingers of wash it away with a jet of water.
30 May, 2014