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natisto

pin oaks: why does this tree look sick? problem help!

natisto
14 years ago

I just moved to a 10-year old development in Durham, NC. There are 3 pin oaks on my property, presumably planted when the houses were built about 10 years ago.

1 pin oak looks great and is doing well, 1 looks decent, but the third one is really struggling.

Here are some pictures:

This is the sickly pin oak:

http://nathan.esheff.com/pinoak/IMG_4791.JPG

This picture shows the healthy ones, with the sickly one in the background:

http://nathan.esheff.com/pinoak/IMG_4793.JPG

I'm pulling my hair out trying to figure out what's wrong. I've looked for insects, fungi, or diseases but can't find any evidence. My thought was that the sickly one doesn't have as good soil drainage...but pin oaks are supposedly able to grow in poorly draining soil just fine. Can anyone point me in a direction?

Thanks for your help.

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