They certainly ought to grow for you. Bearded irises need to be divided every few years to do their very best. You want to look for young, firm, unblemished rhizomes and discard the old, withered, chewed on, etc.

The one odd thing about these is they don't like to have the tops of their rhizomes buried underneath the soil. I dig a hole, make a mound of good, amended, fertile soil in the hole and nearly to the top of it. Then set the rhizome right on top with the roots draping over and around the mound. Backfill around the mound, cover the roots, but leave the top 1/3 to 1/2 of the rhizome exposed to the air. They may or may not bloom well next year, but should put on a great show the following one. They like regular water (though not soggy) and fertilizer in the spring. Good luck!

I dont have a rhizome. I just have round bulbs. I'm scared because I found the bulbs in the same area I have Iris but a friend stated how do I know I did not find onion bulbs. Is there a way I can tell?

Hmmmn. Since you have planted the bulbs, just watch them carefully. Chances are they will come up. Blooms? Maybe, maybe not. Alot of bulbs don't bloom the first year after they are dug and transplanted.

If they are onions, the foliage will smell oniony when it is bruised. Keep in mind that there are ornamental onions (alliums). I assume they would smell oniony too, but I don't grow them so don't know for sure. Without a better description of the bulb, plant, and/or flower, I think that's the best I can do for you.