ewwr1842
Newly Registered
Posts: 1
Joined: Tue Oct 04, 2011 4:46 am
Location: Palo ALto, CA

Japanese Maple... with white spots

I purchased an acer palmatum orange dream about a month ago, and potted it into a new, bigger pot. Nothing major, no real disturbance of the root balls. The tree had some mild burn on the top leaves which the nursery suggested was from under watering.

I've been watering it twice a week (I live in Palo Alto, CA, so it's pretty dry), and the tree has now developed these white spots. Further, more of the leaves seem to be turning brown at the tip. I'd think it was just the onset of fall, but they're turning straight to brown, not yellow or orange. Picture below.

HELP!

[url]https://www.flickr.com/photos/ewwr1842/6210217314/[/url][/url]

User avatar
rainbowgardener
Super Green Thumb
Posts: 25303
Joined: Sun Feb 15, 2009 11:04 pm
Location: TN/GA 7b

I don't know what the problem is, but here's a better link to your photo:


https://www.flickr.com/photos/ewwr1842/6210217314/
Twitter account I manage for local Sierra Club: https://twitter.com/CherokeeGroupSC Facebook page I manage for them: https://www.facebook.com/groups/65310596576/ Come and find me and lots of great information, inspiration

WildcatNurseryman
Senior Member
Posts: 266
Joined: Mon Feb 20, 2012 7:42 pm
Location: Lexington, KY.

Appears to be powdery mildew. It can be sprayed with a fungicide, but I have never seen a Jap Maple have a major issue with this. Aesthetics only. It is much more of a problem in some perennials like phlox and beebalm.

User avatar
koiboy01
Senior Member
Posts: 171
Joined: Fri Jan 27, 2006 7:49 pm
Location: U K

Hi,
Could it be you are watering it too much,the soil only wants to be kept moist.
---------------------------------------------------------------------------------------
I have just noticed the date this thread was posted it was last October.
so the problem as either been solved or not which ever the case maybe.
koiboy01
anyone who never made a mistake never made anything.

Return to “Japanese Garden Forum”