Yes they will. If you check out the pictures that I took around this time last year, it'll give you a good idea of what theyll look like.
We were there last year over the first week of July and they were in bloom.
I went this weekend and everything was blooming beautifully. I'm sure it'll still be so next weekend.
Yes, Berkeley wheather is perfect for roses, there will be plenty of blooms. I visited this month and it's pretty cool, and there is a picture spot in the middle, the whole garden come in the picture.
I went about two weeks ago, and while the roses were budded out quite a bit, in looking at the bushes it appeared that there were lots of buds still to bloom. I think it will still be lovely when you go!
Yes should be beautiful at that time.
Thanks! Your answer is awaiting moderation.