Black spots on hydrangea

aqua_thumb(7)July 9, 2006

I have a huge mophead hydrangea. I'm new to caring for them, but I have black spots forming on the top of the leaves. Also the new flowers are turning brown and dry before they've even reached their full growth. When I moved into this house about a month ago, I deadheaded all of the dried up flower heads and lightly pruned the dead wood. Does anyone know what these spots are? They're pretty big. I haven't seen any evidence of any bugs under the leaves, but I saw a small white film that almost resembles cotton on one of the stems. I also saw a little of that "cotton" looking stuff on a stem of a coneflower, which is on the other side of my property. Should I spray everthing with insecticidal soap, or what should I use?



Thank you for reporting this comment. Undo

The info at the link may help you identify the cause and treatment.

Here is a link that might be useful: Hydrangea diseases

    Bookmark   July 10, 2006 at 7:03AM
Sign Up to comment
More Discussions
Another update on madabouteu - by madabouteu
For those who might wonder - I am still doing OK. Legs...
Alabama Red Clay Soil
Hi I am new to gardening and want advice on how to...
Evergreen Hedge
I need help figuring out what tree/bush that I could...
Nonnleaking exterior faucet fittings
Can anyone recommend a brand of faucet fittings that...
Veggies for Spring Swap
I am ordering seeds to grow vegetable starts for the...
Sponsored Products
Area Rug: Kerman Black 5' x 8'
Home Depot
Black Ornate Graphic Illusions Rug
$39.99 | zulily
Architex Fashion Fable Black Magic Fabric
$58.00 | Viesso
Howard Elliott 43011 Dawson Antique Silver Leaf Mirror w/ Black Inset Leaner
Beyond Stores
Virtu USA VST-2067-BAS Adonia Above Mount Vessel Sink in Shanxi Black
$499.00 | Blue Bath
Progress Lighting P5520-31 Meridian Black Outdoor Hanging Lantern
Littman Bros Lighting
Kichler Olympia Pendant Light Kit - 380001AP
$143.60 | Hayneedle
Magnum Floor Lamp
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™