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Re: sap & pruning

I asked our head extension honcho about the "sap moving up the tree" and he
said that the nutrients, carbos, etc are in a chemically bound state during
dormancy and that they change to a chemically free state.  He said that idea
that the sap would move up and down would mean that the "sap" would move down
into the roots in late fall and swell up the roots and that's "ridiculous."

Also, wounds from pruning can heal up faster after growth begins and there are
less problems with insects & disease and less freeze and desication problems
for the open wounds.

Sheryl in Western Colorado

Frances Burns wrote:

> In Eugene, OR (Z 7) 30 miles from where I live, roses are usually pruned by
> Washington's birthday in February.  Because we are 600 feet higher in
> elevation, I have learned to hold off until mid-March to avoid spring
> frosts which kill back the new growth.
>
> Anelle Kloski wrote:
>
> > Having lived in the coastal areas of California for some years, I
> > learned to prune things like roses at a rather arbitrarily chosen time.
> > That is, I had always read that December or January was the time to
> > prune, to discourage fresh growth and allow a semblance of dormancy.
> >
> > Now that we have moved to the Sierras at 3000', and have a climate with
> > more cold weather, I was surprised to hear advice from a nurseryman
> > neighbor.  He said to prune things like roses when they begin to show
> > signs of new growth in the spring.  I told this to my friends back in
> > the more Mediterranean climate, and they didn't believe me.  So I will
> > be interested in any answers to Sheryl's question about pruning.
> >
> > Anelle
> >
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