Mealybugs: how to protect a parasitized cedar?


2 minutes

Picasa/celeste tramp – Fotolia

VIDEO – If this sucking insect does not endanger the health of the tree, care must be taken to ensure that it does not spread to other plants in the garden.

“My Lebanese cedar has a white film on the needles and also a few very small white bubbles. Furthermore, he has “cry” Periodically a kind of honeydew that covers the ground with tiny droplets that are very easily removed with water. Where does it come from? And how can we ecologically care for this magnificent 70-year-old tree?”

Your tree is most likely infested with a species of mealybug, a tiny insect that causes the mealy or cottony structures and honeydew that you see on its needles.

White oil and black soap

In France there are 9 species of scale insects on the different species of cedar grown in our country. The infestation does not pose a visible danger to your tree, but if necessary it may prove useful to use special treatments based on so-called “white” oil or black soap with a few percent alcohol. Be careful not to spread the insect to other plants.


DevanCole is a Dailynationtoday U.S. News Reporter based in London. His focus is on U.S. politics and the environment. He has covered climate change extensively, as well as healthcare and crime. DevanCole joined Dailynationtoday in 2021 from the Daily Express and previously worked for Chemist and Druggist and the Jewish Chronicle. He is a graduate of Cambridge University. Languages: English. You can get in touch with me by emailing:

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