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Re: Rose cuttings

> I propagated roses commercially for the first time this year.  I did
> about 50 000 leaf bud cuttings primarily for Parkland and Explorer
> series
> roses.  I used a mist system that maintained RH at about 86% and temp
> at
> 30-32 degrees C at midday.  Success was moderate to excellent for most
>
> varieties with the exception of Hansa and Therese Bugnet.  They turned
>
> brown after about 48-72 hours.  Not slimy, dark brown but a dry,
> crispy
> brown.
>
> Why did they do this so fast?  Any ideas?
>
> BTW, I was using Sunshine Mix #1 with some extra Perlite and our
> irrigation water has slightly elevated levels of calcium.
>
> Thanks in advance.
>
> Dean Arndt in Manitoba

   Did you use a rooting hormone powder?  Most powders contain some
fungicide.  If not, you should have treated the cuttings with a
fungicide.  the mix you used hold too much water, and I believe that the
temperature was too high.  hope this helps
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