Bearclaw
Colorado Bear
Hey guys, I really need your help with this one. Client calls me and says that over the last week, leaves on his oak tree started dying and falling off. I think this is Oak Wilt, but I am not sure. I treated the tree with Imidichloprid for aphids about a month ago.
The tree is a Black Oak based on the giant size of the leaves and the bark. The tree is crawling with black ants, and eastern prarie yellow jackets and bald faced hornets are everywhere.
<table style="width:auto;"><tr><td><a href="https://picasaweb.google.com/lh/photo/SAYnjA22XqF_ThMSKsjG6A?feat=embedwebsite"><img src="https://lh6.googleusercontent.com/-QrBanQ-XAx8/TjshNBru5QI/AAAAAAAAAJk/VdKsvdNtDkg/s800/IMAG0026.jpg" height="478" width="800" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="https://picasaweb.google.com/BearclawArborist/Oak?authuser=0&feat=embedwebsite">Oak</a></td></tr></table>
Overall look.
<table style="width:auto;"><tr><td><a href="https://picasaweb.google.com/lh/photo/2b-xD5buwu43w8VkkhB8vg?feat=embedwebsite"><img src="https://lh6.googleusercontent.com/-bhJXtdiGHEc/TjsiqTApelI/AAAAAAAAAKM/JOuSAHIvIkU/s800/IMAG0024.jpg" height="478" width="800" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="https://picasaweb.google.com/BearclawArborist/Oak?authuser=0&feat=embedwebsite">Oak</a></td></tr></table>
Twig death and blackened.
<table style="width:auto;"><tr><td><a href="https://picasaweb.google.com/lh/photo/SNpFYmXriJg8gh4prCu_Cg?feat=embedwebsite"><img src="https://lh4.googleusercontent.com/-I-mjoGeAekU/TjsjQ2iRuPI/AAAAAAAAAKY/9oPLqfngOVI/s800/IMAG0022.jpg" height="478" width="800" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="https://picasaweb.google.com/BearclawArborist/Oak?authuser=0&feat=embedwebsite">Oak</a></td></tr></table>
Weeping.
<table style="width:auto;"><tr><td><a href="https://picasaweb.google.com/lh/photo/5RYCNGT2yntnuiliOik3jA?feat=embedwebsite"><img src="https://lh5.googleusercontent.com/-at732LwI5fE/TjsjesaXBfI/AAAAAAAAAKc/eFS9JUuFVlM/s800/IMAG0021.jpg" height="478" width="800" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="https://picasaweb.google.com/BearclawArborist/Oak?authuser=0&feat=embedwebsite">Oak</a></td></tr></table>
Galls, often on the dead twigs, usually at the leaf attachment point.
<table style="width:auto;"><tr><td><a href="https://picasaweb.google.com/lh/photo/J-oXW4cfHSIfmMDnGCYt6Q?feat=embedwebsite"><img src="https://lh4.googleusercontent.com/-FzUwVYJ5kfE/TjsjwyBFkfI/AAAAAAAAAKk/AjzHLp0Img0/s800/IMAG0020.jpg" height="478" width="800" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="https://picasaweb.google.com/BearclawArborist/Oak?authuser=0&feat=embedwebsite">Oak</a></td></tr></table>
Closeup of the leaf, almost looks like oak mites and powdery mildew.
<table style="width:auto;"><tr><td><a href="https://picasaweb.google.com/lh/photo/zva7Ii8C3OZBQScwyQTIRg?feat=embedwebsite"><img src="https://lh5.googleusercontent.com/-HIlyl1YrDtM/Tjsj4TvQr3I/AAAAAAAAAKs/vS6qd6FtsoU/s800/IMAG0019.jpg" height="478" width="800" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="https://picasaweb.google.com/BearclawArborist/Oak?authuser=0&feat=embedwebsite">Oak</a></td></tr></table>
Blackened stems with shepards crook, almost looks like fireblight.
<table style="width:auto;"><tr><td><a href="https://picasaweb.google.com/lh/photo/1OqaDvIaGGgFEPMghaKNAg?feat=embedwebsite"><img src="https://lh6.googleusercontent.com/-A2hIGsntFD8/TjskAvvEWJI/AAAAAAAAAKw/3nBVcgFIx3c/s800/IMAG0018.jpg" height="478" width="800" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="https://picasaweb.google.com/BearclawArborist/Oak?authuser=0&feat=embedwebsite">Oak</a></td></tr></table>
<table style="width:auto;"><tr><td><a href="https://picasaweb.google.com/lh/photo/hYUQXCyXUgVtkoo7iUTMgw?feat=embedwebsite"><img src="https://lh5.googleusercontent.com/-hYu2v39WLdY/TjsjoTuwkdI/AAAAAAAAAKg/kwS4d_SwPQM/s800/IMAG0016.jpg" height="800" width="478" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="https://picasaweb.google.com/BearclawArborist/Oak?authuser=0&feat=embedwebsite">Oak</a></td></tr></table>
<table style="width:auto;"><tr><td><a href="https://picasaweb.google.com/lh/photo/mAEEbUFn8bk-ZFVqx-Y_6Q?feat=embedwebsite"><img src="https://lh4.googleusercontent.com/-DcAKKAxpzeE/TjshF8r9P5I/AAAAAAAAAJQ/V3DnZBtliP4/s800/IMAG0028.jpg" height="478" width="800" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="https://picasaweb.google.com/BearclawArborist/Oak?authuser=0&feat=embedwebsite">Oak</a></td></tr></table>
Good leaf stalk, and branch.
The tree is a Black Oak based on the giant size of the leaves and the bark. The tree is crawling with black ants, and eastern prarie yellow jackets and bald faced hornets are everywhere.
<table style="width:auto;"><tr><td><a href="https://picasaweb.google.com/lh/photo/SAYnjA22XqF_ThMSKsjG6A?feat=embedwebsite"><img src="https://lh6.googleusercontent.com/-QrBanQ-XAx8/TjshNBru5QI/AAAAAAAAAJk/VdKsvdNtDkg/s800/IMAG0026.jpg" height="478" width="800" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="https://picasaweb.google.com/BearclawArborist/Oak?authuser=0&feat=embedwebsite">Oak</a></td></tr></table>
Overall look.
<table style="width:auto;"><tr><td><a href="https://picasaweb.google.com/lh/photo/2b-xD5buwu43w8VkkhB8vg?feat=embedwebsite"><img src="https://lh6.googleusercontent.com/-bhJXtdiGHEc/TjsiqTApelI/AAAAAAAAAKM/JOuSAHIvIkU/s800/IMAG0024.jpg" height="478" width="800" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="https://picasaweb.google.com/BearclawArborist/Oak?authuser=0&feat=embedwebsite">Oak</a></td></tr></table>
Twig death and blackened.
<table style="width:auto;"><tr><td><a href="https://picasaweb.google.com/lh/photo/SNpFYmXriJg8gh4prCu_Cg?feat=embedwebsite"><img src="https://lh4.googleusercontent.com/-I-mjoGeAekU/TjsjQ2iRuPI/AAAAAAAAAKY/9oPLqfngOVI/s800/IMAG0022.jpg" height="478" width="800" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="https://picasaweb.google.com/BearclawArborist/Oak?authuser=0&feat=embedwebsite">Oak</a></td></tr></table>
Weeping.
<table style="width:auto;"><tr><td><a href="https://picasaweb.google.com/lh/photo/5RYCNGT2yntnuiliOik3jA?feat=embedwebsite"><img src="https://lh5.googleusercontent.com/-at732LwI5fE/TjsjesaXBfI/AAAAAAAAAKc/eFS9JUuFVlM/s800/IMAG0021.jpg" height="478" width="800" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="https://picasaweb.google.com/BearclawArborist/Oak?authuser=0&feat=embedwebsite">Oak</a></td></tr></table>
Galls, often on the dead twigs, usually at the leaf attachment point.
<table style="width:auto;"><tr><td><a href="https://picasaweb.google.com/lh/photo/J-oXW4cfHSIfmMDnGCYt6Q?feat=embedwebsite"><img src="https://lh4.googleusercontent.com/-FzUwVYJ5kfE/TjsjwyBFkfI/AAAAAAAAAKk/AjzHLp0Img0/s800/IMAG0020.jpg" height="478" width="800" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="https://picasaweb.google.com/BearclawArborist/Oak?authuser=0&feat=embedwebsite">Oak</a></td></tr></table>
Closeup of the leaf, almost looks like oak mites and powdery mildew.
<table style="width:auto;"><tr><td><a href="https://picasaweb.google.com/lh/photo/zva7Ii8C3OZBQScwyQTIRg?feat=embedwebsite"><img src="https://lh5.googleusercontent.com/-HIlyl1YrDtM/Tjsj4TvQr3I/AAAAAAAAAKs/vS6qd6FtsoU/s800/IMAG0019.jpg" height="478" width="800" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="https://picasaweb.google.com/BearclawArborist/Oak?authuser=0&feat=embedwebsite">Oak</a></td></tr></table>
Blackened stems with shepards crook, almost looks like fireblight.
<table style="width:auto;"><tr><td><a href="https://picasaweb.google.com/lh/photo/1OqaDvIaGGgFEPMghaKNAg?feat=embedwebsite"><img src="https://lh6.googleusercontent.com/-A2hIGsntFD8/TjskAvvEWJI/AAAAAAAAAKw/3nBVcgFIx3c/s800/IMAG0018.jpg" height="478" width="800" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="https://picasaweb.google.com/BearclawArborist/Oak?authuser=0&feat=embedwebsite">Oak</a></td></tr></table>
<table style="width:auto;"><tr><td><a href="https://picasaweb.google.com/lh/photo/hYUQXCyXUgVtkoo7iUTMgw?feat=embedwebsite"><img src="https://lh5.googleusercontent.com/-hYu2v39WLdY/TjsjoTuwkdI/AAAAAAAAAKg/kwS4d_SwPQM/s800/IMAG0016.jpg" height="800" width="478" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="https://picasaweb.google.com/BearclawArborist/Oak?authuser=0&feat=embedwebsite">Oak</a></td></tr></table>
<table style="width:auto;"><tr><td><a href="https://picasaweb.google.com/lh/photo/mAEEbUFn8bk-ZFVqx-Y_6Q?feat=embedwebsite"><img src="https://lh4.googleusercontent.com/-DcAKKAxpzeE/TjshF8r9P5I/AAAAAAAAAJQ/V3DnZBtliP4/s800/IMAG0028.jpg" height="478" width="800" /></a></td></tr><tr><td style="font-family:arial,sans-serif; font-size:11px; text-align:right">From <a href="https://picasaweb.google.com/BearclawArborist/Oak?authuser=0&feat=embedwebsite">Oak</a></td></tr></table>
Good leaf stalk, and branch.