I've never tried flower seeds from florist flowers, but I think any seed/plant from the store is fair game to try. I've planted baby dill from a grocery store with good success, and I'm always putting my extra green onions into the ground because they will last and give lots of green tops through the cool weather. I've also saved heirloom tomato and melon seeds from those bought in farm markets, and they work fine.

You can always do the "damp paper towel" test and see if they'll germinate before trying them in soil.

Caroline, are you sure you have mature seeds in your floral arrangements? I've never found ripe seeds in any of my own fresh bouquets

I have saved these flowers and they are all dried up. I am
thinking of saving the seeds, I may give the damp towel test a try. Thanks for the info.