I have an akebia vine that needs drastic pruning in order to remove an old trellis. Any suggestions on when I should do this and how much it can be pruned?
These vines can tolerate some pretty severe pruning and still thrive.....maybe why they are considered invasive in some parts of the country At this time of year, I'd wait until after flowering; otherwise, winter is an ideal time for hard pruning.
I cut mine down to a stub about 3-4 inches tall every 4/5 years. It regenerates to the top of the porch railings/support columns within about 8-10 weeks after this treatment. Keeps it vigorous and attractive by getting rid of all of the old, dead wood.
Trust me, you can't really kill these things even when you want to. Drastic pruning will NOT hurt it.