If there is no wind there is a chance it was not pollinated adequately. Fruitnut is the expert on greenhouse pollination so hopefully he will chime in here. It could just be thinning, those dwarf peaches set a ridiculous number of flowers per inch. So if there are still a lot left it is probably thinning. It could also be too immature so it doesn't want to bear lots of fruit. Peaches drop a lot until they are a few years old.

Scott

Hi Scott,
Thanks for your reply. I have left the greenhouse door open on the odd nice day to encourage insects to pollinate it, however i have gone round the flowers with a small brush. I shall keep my eye on it and hope it is just thinning out because as you have said it had loads and loads of flowers on it. I just hope I can get one peach out of it because ive never seen them growing in the wild before (by that I mean ive only ever seen them in the supermarket) ha ha. Who would believe it and im 57 years old!!
Thanks again, Scott
Kind regards
Averil (UK)

Averil:

One tip on pollinating peach/nectarine is to spray lightly with water. Just a misting during bloom once or twice a day. I use a hand sprayer and plain water. Not sure it works but since starting haven't had a failure to set and did before.

This year I also hand pollinated mostly with my finger tip. Whatever I had a good set on everything this year.

Thank you fruitnut, that is a good tip. I have misted once but that was more to just give it a little bit of a shower than anything else. I shall definitely do that regularly now
Many thanks for your advice
kind regards
Averil