Persephone wrote:
I planted vines on each side of the back porch about 5-6 years ago.
In my dumb innocence, I didn't know how predatory it was; by now,
it's coming up all over the back yard!

About 3 years ago, come dormant time, I cut one side off a little
short of the roof, to avoid compromising the roofing. That part did
not regrow, and my gardener (who only mows & edges) said it
doesn't regrow when cut off.

But it grew under the porch from the other side, and now is even
more abundant than before.

Now I finally come to the Question:

When it goes dormant again, can I or can I not prune from the top?

TIA

Persephone

Late Summer Pruning
August: Cut all of the current side-shoot
growths back to within 12" of the main
lateral. This allows more sun to get to the
wood, encouraging flower-bud formation.
This should leave 4-6 leaves on each side
shoot. Obviously, any side shoot required
to extend or train the framework should
be left and trained as required.

Winter Pruning
February: Cut these summer-pruned side shoots back even further - 1
or 2 inches long, leaving only 2 or 3 buds on the side shoot. These
will
be the flowering spurs. It should be possible now to distinguish the
plumper flower buds from the slimmer growth buds. Long, whippy
shoots that grew after the summer pruning should also be pruned. Cut
these back to five or six buds
from the main branch, making
the cut just above a bud.
Remove any suckers that appear
at the base of the plant.