> i have a 4 yr old grapevine that has produced a lot of grapes thi year
> .however the grapes are very tightly compacted and havent room to
> expand. can i do anything about this ?
You may find that as the bunches mature, the stems between the grapes
actually lengthen and the bunch becomes looser. That's what happens on
my vines. There are also grape varieties where the bunches are so
tightly packed the grapes get flats on them where the grapes touch -
some of the table grapes you buy in the shops are like this. So growers
of those varieties don't see it as a problem, but rather a feature of
Short of individually pruning off individual grapes - something that
might be done for grapes that are going to used for making certain very,
very expensive wines, or planting a different grape variety, there is
nothing practical you can do about it.
There are a great many varieties of grape. It is worth researching the
properties of the variety before planting it. Nurseries sell a lot of
totally unsuitable grape varieties to people. For example, I've seen
things like Cabernet Sauvignon for sale in England, complete waste of
space in our climate.