[NAFEX] grape callusing

Ginda Fisher list at ginda.us
Fri Feb 15 23:32:27 EST 2008

Mark, every spring when I prune my canadice grape I put a few one foot long 
lengths of vine into two small vases on my kitchen windowsill.  I've done 
this for about 5 years now, and I think 100% of them have sprouted leaves 
above the waterline, and grown callus and then roots below the waterline.  

Maybe canadice is just especially easy to root.  I've never tried any other 
grape.  But that's my suggestion - put it in a vase and wait for roots.

eastern mass, zone 6
...... Original Message .......
On Fri, 15 Feb 2008 08:23:18 -0700 "Mark and Alisha Fehringer" 
<markandalishafehringer at peetzplace.com> wrote:
>I am trying to callus a small group of grape cuttings as a 'practice run' 
for a larger group I will be doing this spring. The cuttings were well 
hydrated. I dipped them in rooting powder and planted them in potting soil 
in a 1 gallon plastic pot and used a heat lamp to maintain a soil 
temperature of 80-85 degrees.  After several weeks there wasn't any callus. 
I put them back in the heat for another week or two, and still no callus, 
but green buds are pushing out. Can the cuttings essentially rot before 
they callus when in soil?  Would it be better to use something more sterile 
like perlite?  My intention was to let them callus and root directly in the 
pots, and I could plant them in their permanent location this spring.  What 
would happen if the ends of the cuttings were clipped a little shorter to 
expose fresh cambium and start over?
>Northeast Colorado 

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