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nafex - Re: [NAFEX] Cedar Tree and Apples

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  • From: "Dennis Norton" <dmnorton@royaloakfarmorchard.com>
  • To: "North American Fruit Explorers" <nafex@lists.ibiblio.org>
  • Subject: Re: [NAFEX] Cedar Tree and Apples
  • Date: Tue, 16 May 2006 16:54:27 -0500

Could be Cedar Apple Rust.  Here's the scoop and a photo. 

Cedar Apple Rust (118, 119)—Bright yellowish orange spots have begun to appear on the leaves of trees. On the upper surfaces of the leaves, tiny pustules are located within the spots. Circular lesions can be seen on the lower surface of the leaf, with the aid of the hand lens. Nothing can be done now to treat this disease now. However, be prepared to treat infected trees next spring. In the future, plant rust resistant varieties.

 

----- Original Message -----
From: Zeugitai
Sent: Tuesday, May 16, 2006 8:06 AM
Subject: [NAFEX] Cedar Tree and Apples

The local nurseryman warned me that apples and cedars "co-host."  I nodded and took it to mean that they harbor mutually antagonistic organisms, but that was just my guess. I have one old cedar tree in front by the drainage ditch. It's always cut down to twenty feet by the power company people, but has a twenty foot spread to it.  It might as well be a bird hotel for all the birds living in it: brown thrasher, mockingbird, sparrows, blackbirds, mourning doves.... But I have put in young apple trees all around the house varying from a minimum of 40 feet away going back to a hundred feet.  I am now seeing small orange blotches on the leaves of several closer trees and was informed that this is due to the cedar. My question is whether the cedar must go for the apples' sake, or whether pruning it back would help.  And what's the cure for the blotches?  Thanks



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