The Q&A Archives: White Spots On Lamb's Ears

Question: I have carefully grown lamb's ears in a pot in a zone in which they are traditionally unhappy (New Orleans/Southwest Florida). Now, after 3 years of thriving and multiplying, they are developing white, powdery "things" (not patches, more like lint) on their leaves and stems. Its this a fungus? How do I get rid of it, keep it from spreading? I have been giving it a light fertilizer lately, is it trying to tell me, "Don't fertilize me?" Please help! I don't want to lose my little lamby!

Answer: The white patches could be powdery mildew fungus, or mealybugs. Try washing the patches off. If they stick around, they're probably mealybugs. These insect pests attach themselves to stems and leaves and feed on the fluids within plant tissues. Spraying weekly with insecticidal soap will deter these pests. You should be able to purchase insecticidal soap at your local garden center. You can also try spraying with a soapy water mixture. Or, try dabbing them with rubbing alcohol. Keep a very close eye on your other houseplants, as all these pests spread easily.

« 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 ge1836 and is called "Sempervivum Henry Carrevon"