The Q&A Archives: Taxus Root Weevil Control

Question: The spring growth on our established taxus is robust, but then follows a heavy needle drop. I read that this may be due to the taxus root weevil. I have seen and hand-picked black vine weevils in rhododendrons close by, and I understand that these are the mature form of the root weevil. Is this correct, and what are the best methods to deal with this problem?

Answer: You're right, black vine weevil are the adult form of Taxus root weevil. Beneficial nematodes are an effective organic control method. You can order them from Gardens Alive ( They work best if you can keep the soil evenly moist -- they don't survive well in dry soil. Best of luck to you!

« Click to go to the homepage

» Ask a question of your own

Q&A Library Searching Tips

  • When singular and plural spellings differ, as in peony and peonies, try both.
  • Search terms are not case sensitive.

Today's site banner is by Fleur569 and is called "Shamrock Zinfandel"