If you've noticed that some leaves on your Phlox, BeeBalm or other plants look like they have a little powder on them, it could be Powdery Mildew. This whitish-gray powder can rub off, or blow off in the wind.
Since it's mildew, I thought it would happen more often in wet weather, but that's not the case. Powdery Mildew is caused by a variety of fungi. The powder you see are the spores of the fungus which a light breeze can spread.
Good news? Powdery mildew is not fatal and won't cause serious damage. It will weaken the plant, slow its growth, postpone blooms, and leave pucker-like scars on foliage. The foliage may also yellow and leaves may drop off. Promptly remove and dispose of foliage and stems that show the powdery substance. Neem Tree Oil (available at Woodbridge Greenhouses) is organic, safe and effective. It is also an excellent treatment for many other garden pests and problems.
Stop it from spreading: Should you have this problem, cut off to the ground all the moldy old foliage, stems and spent flowers. Don't contaminate your compost pile with this debris. Dispose of it in a sealed container or bag to prevent it from blowing onto other plants in your garden. For extra protection, wash garden tools with hot soapy water or a weak bleach solution and rinse well.
Article compiled by Renee C. Brannigan
Posts
No comments:
Post a Comment