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Vine pruning advice
in Fruit & veg
I bought a couple of grape vines (phoenix) a month or two ago and installed a wire trellis for them to grow up - as a complete novice I was hoping someone might be able to offer some advice on the initial training and pruning.
I am planning to follow the single cordon rod and spur training guide on the RHS website https://www.rhs.org.uk/fruit/grapes/rod-and-spur-pruning-system - my question is - as it arrived as shown already pruned after the autumn, should I prune it back to the first wire as the RHS guide suggests? Or do I leave it as is and then just tie in the new shoots to the wires as they grow in the spring? Additionally one of them splits into two stems fairly low down, how should I prune that one? Photo below
Any other hints/tips about growing vines in the UK also gladly received
Many thanks

I am planning to follow the single cordon rod and spur training guide on the RHS website https://www.rhs.org.uk/fruit/grapes/rod-and-spur-pruning-system - my question is - as it arrived as shown already pruned after the autumn, should I prune it back to the first wire as the RHS guide suggests? Or do I leave it as is and then just tie in the new shoots to the wires as they grow in the spring? Additionally one of them splits into two stems fairly low down, how should I prune that one? Photo below
Any other hints/tips about growing vines in the UK also gladly received
Many thanks

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Posts
In your case, it looks like your grapes are grafted on a rootstock (feel free to correct me if I'm wrong), so you need to be careful with pruning. Everything that grows below the grafting point will be a rootstock and you need to prune it throughout the season.
Regarding the winter pruning, even if you consider cordon rod and spur training method, you don't need to cut the cane down to the first wire, you can bend it instead and tie it to the first wire. And prune the one that splits into two stems, leave the stronger one.
Grapes will normally fruit on one year old wood (last year growth). It looks like your plats are 2 years old (judging by the photo). Even if they set some flowers in the first season (it rarely happens) you should cut them back. The plants need to establish first.
Good luck