How to remove white powder substance on house plants?

  3 answers
  • Deanna Deanna on Mar 21, 2018

    It sounds like a fungus to me, try spraying them with some baking soda and water solution or if you have any around some antifungal spray for roses and outdoor plants. Clean up the soil inside the pots too.

  • Janet Pizaro Janet Pizaro on Mar 21, 2018

    powdery mildew, or could be insects,Check the under sides of the leaves, if there are no insects, apply a fungicide,you may have to re-pot in fresh soil if it does not take control

  • Alice Alice on Mar 21, 2018

    It may be a powdery mildew, which is a fungal disease. Initially, it produces circularpowdery white spots on the foliage of plants. As the disease spreads, the entireplant material can be affected with the fluffy white fungus. Over time parts of theplant will succumb to the disease and die.


    The white substance rubs off easily with your fingers or a cloth. Don’t mist plants. Prevent the foliage from getting wet when watering. Keep plants spaced to enhance air flow or use a small fan to circulate the air. Once one plant shows signs of infection, isolate it to prevent the spread of the fungus. Pinch off the affected areas and discard.


    Read more at Gardening Know How: Powdery Mildew Treatment Indoors: How To Get Rid Of Powdery Mildew On Houseplants https://www.gardeningknowhow.com/houseplants/hpgen/powdery-mildew-treatment.htm