Re: [Rose-list] Re: pruning techniques for new roses

**C* W* <c*@cyberhighway.net>**

Jeaa1224@aol.com wrote:
> 
> Thanks Valerie, and do you or does anyone else know what the black canes might
> indicate in the way of poor handling, being held in a dormant state too long,
> disease, etc.? Is it ever unsafe to put roses with this appearance into beds
> with other roses, shrubs and perennials? Are there other signs to look for in
> addition to black canes to help identify the cause of this condition? I'm sure
> growers inadvertently send out
> poor quality material from time to time and it would be helpful to assess from
> this end whether or not one  wants to gamble on this vendor again or not. For
> instance, if the black canes were almost positively identified as diseased, I
> would probably not place an order again with that vendor.
> 
> Thanks in advance, Joanie Z. 5a
> 
> _______________________________________________
> rose-list maillist  -  rose-list@mallorn.com
> http://www.mallorn.com/mailman/listinfo/rose-list
Hi -
Your black canes -- might they be dark purple? Verticillium wilt. A
fungus. Comes to you on bare-root roses. When you get your bare-root
roses, dip them in a 1-20 Clorox solution to prevent it. It comes from
the grower's fields - particularly those sandy fields in Calif. - and
likes the cool, damp, dark of the shipping box.
When you see it on the canes you can try cutting it out. Mixed success.
Clean your pruners between each cut. If you can't get rid of it, and you
probably won't - dig it out and sterilize the hole with the Clorox
solution. Think twice about putting another rose, or any other plant,
for that matter, in the same hole.
Cathy, CR. zone 6a.

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