I have a wacky plot section, wondering if it would work. It's a small raised section next to the stumps of old plum trees cut down last year. Full sun, the west side drops down 6' to a 6' ledge, then 20' to the road below.
The spots directly next to the stumps have good rich soil, so thought of planting there, and letting the vines cascade over the rocky ledge to the road below. Maybe no trellis system would be required. This would give several vines 30'+ of rocky cliff to expand over. I could access most of the vine from the ledge.
Only problem is invasive bamboo and weeds cover everywhere else on this plot, despite being burnt back last winter. I could try and keep the planting holes clear, but everything else would be too much. Will the fruit suffer if they get mixed up with bamboo and weeds on a ledge like this, or are they hardy enough to run over top? If most kiwi growth is cutback everyyear, I could see burning the ledge clear each year, and lots of relatively clean spreading area. But if the kiwi cordons also need to expand down the slope, it could be trouble.
A related question is how high do the vines need to be off the ground and why? Assuming pruning can be done, Is it just so fruit isn't in the mud? I could make a 3' trellis?