Green worm is probably a sawfly larva (caterpillar) and the black bugs may have been its frass (poop)......

Yes I get rose slugs (sawfly larvae) inside our rose blooms also...

jans and jim, thanks for answering. I think the black bugs were moving. I even had my glasses on. Oh well, maybe I squished poop.

What to do about the sawfly?

andrea

I just pick them out of the bloom because I'm afraid to spray anything inside blooms due to bees visiting them.
But most of the time I just let them go when there inside blooms.

Here I always have to inspect our rose leaves because the rose slug (sawfly) eats leaves and can really makes things look awful if the infestation is large enough...
Most of the time rose slugs can be found on the underside of leaves.
But not always I have found out...
You will know when you start seeing white slide marks or holes eaten in leaves...

Can you post pics? Because its always nice to know exactly what type insect your dealing with andreark...
All we can do is guess without seeing pics of stuff...

Short video below:

Here is a link that might be useful: short video of sawfly larvae eating a rose leaf

Didn't think to take a photo.

I just used spinosad (just after sundown) and I understand that this will kill them. The product said that if you use it at this time of day, it will have a chance to dry before the morning and won't hurt the bees.

I will also be receiving a shipment of beneficial nematodes any day now. I used the last year when I had many black vine weevils. It worked within a couple of days and doesn't harm our fragile environment. It will also work on many other 'creepy crawlers'.

Thanks Jim for your answer,

andrea

Commonly found inside rose flowers is a shiny black beetle that isn't shaped like a beetle because the abdomen is slender and tapering. These insects are harmless pollen feeders.

Shouldn't spray insecticide in response to finding one worm.

These were much smaller than ants. And I also found a green worm.

These critters were all inside the buds. I have noticed lately that something is chewing on my bud. So I am sure that it wasn't just one bug.

Thanks for the answer,

andrea

Most of the time when I deadhead the Rose Slugs still in the bloom and I just discard it into the trash.
That's why I never worried much about ones in blooms...