top of page

Lilac Borer Infestation in Olive Orchards

In the last few weeks, several pest control advisers contacted me about the lilac borer (also called ash borer), Podosesia syringae (Family: Sesiidae). Lilac borer adults are clearwing moths. Female lays eggs on the stem (young trees) and/or branches of the olive plants. Upon hatching, young larvae enter into the cambium layer of the plant and begin to feed on. One larva can kill a young olive tree as one is enough to girdle the stem. We have observed multiple young trees died due to this pest in the last 2-3 years in olive groves in San Joaquin county. They also infested branches, trunks of the mature olive orchards and cause damage to the plant. I wrote an article about this pest's biology with some preliminary trapping data in 2019 in UCCE Field Notes. Please find the pdf copy of that article below:

Lilac Borer Biology_Field Notes May2019
Download • 1.29MB

51 views

SEARCH BY TAGS: 

bottom of page