Powdery Mildew

MFIXSeptember 6, 2012

I fear that my endless summer may have been overrun by powdery mildew. At first, I thought the leaves were browning and becoming crisp because I had removed a tree from the bed that had become overgrown--but this tree had provided the hydrangea with dappled afternoon shade, so I thought the rapid increase in sun was to blame. Now, since I can see everything clearly in the sun, I see white powdery spots and leaves going purple and getting crisp. Should I do anything, or let it be? I have heard that powdery mildew will not kill, but this plant was put in this Spring, so I am not sure it can withstand it. Any advice is appreciated, thank you.

Thank you for reporting this comment. Undo
luis_pr(7b/8a Hurst, TX)

If the leaves are browning from the edges inswards, there is a soil moisture problem. If you have powdery mildew, there would be grayish or whiteish semicircular patches on the lower parts of the leaves with yellow and or purplish section above the leaf. See the link below.

Here is a link that might be useful: Alabama Cooperative Extension System's Hydrangea Diseases

    Bookmark   September 6, 2012 at 1:54PM
Sign Up to comment
More Discussions
What am I doing wrong???
Each summer I have several "Endless Summer"...
Should I prune this hydrangea?
It came in a small 4" pot. I have transplanted...
cakbu z9 CA
Deer resistant hydrangea?
Hello! I am looking to replace some shrubs this spring...
Looking for hardy hydrangeas to plant.
Looking to plant a couple of hardy hydrangeas. Live...
DEEP blue
When I was growing up my grandmother had big vigorous...
Sponsored Products
Matira Blue and Gold Rectangular: 5 Ft. x 7 Ft. 6 In. Rug
$228.65 | Bellacor
Peugeot Paris u'Select Salt Mill
$47.00 | FRONTGATE
Matira Ivory and Navy Rectangular: 5 Ft. x 7 Ft. 6 In. Rug
$228.65 | Bellacor
Metro Chandelier by Quoizel
$419.99 | Lumens
Safer Brand Garden Fungicide - 32 oz. RTU - 5450
$19.99 | Hayneedle
Peugeot Paris u'Select Pepper Mill - 9"H
$47.00 | FRONTGATE
Calypso Pendant by Tech-Tiella Lighting
$96.00 | Lumens
Seaside Platters - Set of 2
$59.99 | Dot & Bo
© 2015 Houzz Inc. Houzz® The new way to design your home™