I have limited space in the garden at my home, so my grapes vertically scale a 12 foot bamboo trellis that is affixed to the back of my detached garage. The grow of the vines and grapes is so prolific that I want to now run some stainless steel wires from the trellis across small yard to the back of my home roughly 15 feet away. Has anyone ever done this before?
Hey Jeff, sounds doable to me. But you’d better attach the wires to something mighty sturdy as the weight can become tremendous. …it’s said one grape plant can be trained to cover an entire acre!
After setting up the wires you can tie the longest cane growth from last years vines to them. I’d attach one or two canes per wire. The trick will be replacing those canes each year… I’ve done it; as one cane can grow 15 to 20 feet in length per season, you’ve the ability to replace each runner each year. Your fruit forms on the one year old canes as they send additional stems and tendrils out laterally. This method would be ‘cane pruning.’
The problem would occur if you did not totally remove those canes but left them to grow year after year, forming an extremely heavy and dense thicket, susceptible to snow load damage.
If you did leave the first years cane, you’d have to ‘spur prune’ it; removing most ‘lateral branches’ and leaving only a couple of buds per branch. If your vines were not vigorous enough to make the yearly 15 foot run you’d have to establish a lasting vine and prune it as described… But – you’d have to make sure you took out/off the massive excess vines in order to keep it from pulling down the wires.
…in other words, you’re gonna have to prune every year. If you’re eager and willing, the pruning methods will eventually become obvious... For the cane method (above) you’d have to allow the uninterrupted growth of as many 15 foot canes as you had wires, which could be a bit of a trick. But the key to grapes is remembering that their fruit forms only from last season’s growth – which must be both encouraged and removed after fruiting. You renew your fruiting wood yearly and leave the established trunk (thickened vine) as the source of new cane.
...thoroughly confused " title="Wink" /> I’ll try to watch…
There's a two disk dvd on grape pruning at http://www.bunchgrapes.com that will show what you want to know.
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