Rose chafer. I imagine there are sprays for rose chafer, but I have never used them. I guess the good bugs must come along and gobble up the rose chafers or something. At any rate, they have always gone away on their own somehow.

Hopefully someone else will come along and give you more information on a solution.

Kate

Rose slugs? they have done that to me a few times.

We have some type of tiny worm here that burrows into the bud and eats holes. Not sure what it is though.
I don't like spraying the buds/blooms with anything because of the bees.
So maybe someone else can help.

There are small worms that quickly grow into bigger ones--they can be picked off plants. Bacillus thuringiensis is a highly specific toxin that won't bother bees or rose slugs. But, it may kill endangered butterflies, so you do need to be careful.

Dont know if you have them in your area but June Bugs can be a real nuisance, eating leaves and chunks out of my buds. I just use rose insecticide and spray if I see they are working on bushes.

Here (north of San Francisco) what does it and has just started doing it now is the Rose Curculio (I think that's the correct spelling). The beast looks a lot like a lady bug, but is a tad bigger and a tad more mahogany in color and has a LONG proboscis that it sticks into the buds and saps their strength. They droop and never open. Just this minute I came out from my most recent killing spree. I pull them off by hand and squash 'em, using all of my best curse words at the same time.

If you spray, pyrethrin may do the job.

Susan

Here is a link that might be useful: Rose Curculio

Rose slugs, as far as I know, only damage the leaves and not the flower buds. They also are starting their march from the lower leaves upward and turning the leaves to lace....

Susan

Susan,
My experience agrees with what you stated. I've never had bud damage from rose slugs; only lacy leaves.