Stephen Wolstenholme wrote:
I have just moved house and so all that is growing was left by the
previous occupant. One plant is a grapevine that started to grow a few
months ago. It is rooted outside and grows into the greenhouse. It now
covers one side of the greenhouse completely and most of the joining
sides. It has no sign of any developing fruit.

Am I being impatient?

Our grapevines all have tiny fruits on them.