The Q&A Archives: What type of organism is on my winter gem boxwood?

Question: I have two Monrovia winter gem boxwoods outside my front door. They have done very well over the last 1 1/2 year but one has started to become brown. The plant has white patches on the stems and small white worms (?) on it. How can I save this plant? If I treat the fungus or whatever it is do I need to repot the plant?

Answer: Niti,

I am not sure what caused the white patches. Freeze damage or sunburn are both possibly causes. Damage from a chemical spray or something sprayed on the home could also be the cause. The worms are easy to control with most insecticide sprays. If they are caterpillars a spray of B.t. would work. If they are some other kind of larvae you may need to consider a pyrethrin spray (which would also work on caterpillars for that matter).

I suggest you take a sample from the plant along with a photo of the plant in its growing location (if possible) to your County Extension Office to see if they can help diagnose the problem and recommend an appropriate course of action.

Thanks for the question. Please stop in again soon!

« 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 dirtdorphins and is called "sunset on summer"