Re: Aaaaaaack...

**"Don - NJ" godfatha@hotmail.com>**

>From: rose-list-admin@mallorn.com
>From: Jeaa1224@aol.com
>Date: Tue, 25 Jul 2000 13:52:29 EDT

>My two shrub roses, 'All That Jazz', have defoliated after some pronounced
>large brown blotches followed by yellowed leaves. This rose has shiny 
>leaves
>and is supposedly impervious to disease. We've had a cool summer with rain
>thru most of
>July (unusual)...never had this happen before. Have disposed all fallen
>leaves. Tiny new branches seem to be developing here and there on the main
>canes. Sick to pieces as the blooms were fabulous (1st and 2nd year 
>bushes).
>The roses looked wonderful until one day they had dropped 1/2 their
>leaves...99% of the rest decamped last night. Is this blackspot?
>
>Distressed in Northern Illinois
>(Joanie Anderson, N. of Chicago)

Much as we would like it, there aren't any roses that are impervious to 
diseases.  What we do have are roses that can TOLERATE diseases under NORMAL 
CONDITIONS in SPECIFIC LOCATIONS.

If the conditions are not normal, or in other locations,  then the tolerance 
can becomes much less.

Your description sounds like black spot.  At this point, there isn't much 
you can do.  Since you planted a variety that you considered to be tolerant, 
you probably don't want to start spraying it with a fungicide.  So just keep 
picking off the infected leaves and disposing of them, and wait for a return 
to normalcy.

Don from New Jersey

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