I have watched your Post and seen that no one has answered it, maybe you would do better asking on the East Coast around similar Long/Lat. Port Macquarie perhaps

I had one in Melbourne a beautiful tree, I recall it started flowering in about the third year, but so long ago I could be wrong, the thing I do remember most was those horrible black cherry slugs that came every year and ate holes in the leaves, and I had to pick them off as I didnt like to spray. Hopes this helps a little.

Hi mistymorn, thankyou for your repy, I have seen cherries flowering and fruiting in the Perth hills, what I was concerned about was this weeping cherry is located closer to the coast and just wondered about the amount of chill time it would get to promote a great spring show, being an ornamental weeping cherry this is the only reason for planting it,does any one have information about the minimum temperature required? I'm not sure about the long/lat the conditions here are so different from the east,any information would be greatly appreciated, I had given up on this post, thanks again mistymorn.