Two years ago I was given a small vine. I planted it and last year it grew
quite well with the roots outside the greenhouse and approx 8ft length in
greenhouse. This year its has taken off very well now being around a total
of 15ft and with two sets of small grapes showing. There are many nice
healthy leaves on it but I fear perhaps too many. Should I do any pruning
and if so how?

Many thanks for any help
--
John