If I left mine unpruned @Tui, I'd never get in the greenhouse by June! (Trust me, it's happened....) I prune to two leaf nodes beyond the fruit, then let those shoots grow a bit, then cut them back etc. etc. and that's enough to feed the vine, with the unfruited stems that I treat this way too. There is plenty of leaf on it through the summer but not enough to encourage mildews. It's how Monty Don does it I think, in a greenhouse at Longmeadow. It does get away a bit sometimes, but it's a big vine in a big greenhouse, and very vigorous so needs pruning regularly. Also, air needs to circulate in a greenhouse. The year I was unable to prune it the grapes were a mass of mould, mildew and wasps. It's different outside I suppose.
@ShepherdsBarn, I suggest you hold off pruning next year until the grapes are identifiable. You'll get that crop one day I'm sure. 🙂
Looks good to me. Lots of growth and tendrils are reaching out nicely. They are at the end of the branch. I can't see any flowers - yet. They usually grow in the middle of the branch. Just be patient. It looks to be grafted onto resistant root stock - it is, isn't it?
We have outdoor white vines for wine and we allow them to grow on the uprights and rub out lower down. Not sure what variety they are as they have been in situ for many years. We allow them to grow and wait until we see the flowering buds and again wait before we prune back the foliage. The flower clusters are very obvious on ours.
We also have in a greenhouse a red grape (again sorry too long ago to remember which variety) and we only allow the growth on the horizontals to develop rubbbing out any below.
So here are first (and only) flowers on the grape ... they look pretty much the same as the offerings last year - except I had about three bunches ... but probably the same amount of flowers/grapes as in the photo below. The flowers on my vines look nothing like those on @Woodgreen, @Eustace and @tui34. 🍇🤷🏼♀️
@ShepherdsBarn I agree, yours are quite different. In mine, there is only 1 bunch forming per node and each of these bunches are opposite a leaf. Also, the first 5 or 6 nodes of the branch have a bunch developing.
I would recommend you getting this variety, Supaga, as it is quite hardy and gives lot of fruit. It is growing outside in a suburban garden on an east-facing fence. It is in its 6th year; started fruiting in its 3rd year; last year we harvested around 30 kgs of grapes. HTH.
Oxford. The City of Dreaming Spires.
And then my heart with pleasure fills,
And dances with the daffodils (roses). Taking a bit of liberty with Wordsworth
I think you pruned off most the young grapes believing them to be 'tendrils', but even so, it doesn't look very productive. There are so few fruits on each 'bunch'. Possibly it isn't 'Black Hamburg' after all? I think @Eustace may have the right idea -- try a better variety. I can't recommend this one of mine, it's far too vigorous, (I believe it's a rose wine grape) but the one that Eustace has sounds a good one. If space permits you could try one more season with this one, leaving the flower stems alone next time. I think it's a 'Black Hamburg' that Monty Don grows under glass and that seems to carry lots of grapes per bunch.
I hardly pruned off many tendrils, to be honest. What I pruned went into a very small bucket as you can see in the photo. Other tendrils I discarded as they really were just tendrils - no signs of possible fruit at all. Ah well, I think I will leave it for this year and try again next year ... maybe with a different grapevine.
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I prune to two leaf nodes beyond the fruit, then let those shoots grow a bit, then cut them back etc. etc. and that's enough to feed the vine, with the unfruited stems that I treat this way too. There is plenty of leaf on it through the summer but not enough to encourage mildews. It's how Monty Don does it I think, in a greenhouse at Longmeadow. It does get away a bit sometimes, but it's a big vine in a big greenhouse, and very vigorous so needs pruning regularly.
Also, air needs to circulate in a greenhouse. The year I was unable to prune it the grapes were a mass of mould, mildew and wasps. It's different outside I suppose.
@ShepherdsBarn, I suggest you hold off pruning next year until the grapes are identifiable. You'll get that crop one day I'm sure. 🙂
I would recommend you getting this variety, Supaga, as it is quite hardy and gives lot of fruit. It is growing outside in a suburban garden on an east-facing fence. It is in its 6th year; started fruiting in its 3rd year; last year we harvested around 30 kgs of grapes. HTH.
I think @Eustace may have the right idea -- try a better variety. I can't recommend this one of mine, it's far too vigorous, (I believe it's a rose wine grape) but the one that Eustace has sounds a good one.
If space permits you could try one more season with this one, leaving the flower stems alone next time.
I think it's a 'Black Hamburg' that Monty Don grows under glass and that seems to carry lots of grapes per bunch.