One of my favorite things to do when I go to
visit Mark's mom is to prune her grapevines. She has four vines
planted far too close together which grow up a netted wire trellis, so
I can't prune them in a traditional fashion. Instead, I play it
by ear, trying to prune them so that they'll cover the whole trellis.
So I have to stick to general principles rather than following any hard
and fast rules. Except for the main trunk, a grape vine should be
cut back to one year old canes since these are what will produce
fruit. A healthy plant should be cut back so that it has only 40
to 50 buds (from the 200 to 300 buds on the plant before pruning.)
The great thing about grapes is that even
though I'm a rank amateur, they always seem to do fine. The
animation shows the grapevines before and after from this winter's
pruning while the still photo is fruits which were on the vine this
past
summer after my last hack job. I'm very curious to see how well
the vines will bear this summer!