Does anyone recognize this weed? It's very hard to remove; I have to dig it out with a knife. I don't know what it looks like at maturity, nor do I know how it mysteriously spreads to the compete other side of my garden! It is most prevalent in my SDB iris.

I keeping thinking Erigeron but I'm not certain. Maybe let one bloom for a photo before pulling it unless someone else recognizes it?

Thanks, Sue; I will spend some time later studying that plant, and I may let a few mature if it looks promising

I think erigeron, too. They are fairly easy to pull out when they are flowering, but otherwise, nearly always require a weeding tool of some sort.

Thanks, Rick!

After studying Erigeron, I agree that this is probably some type of that plant.
However, it is not the type plant I want where it is growing, so I will continue to dig it out.
I don't think I'll let it mature - even to see the bloom!

I appreciate both your help so much

Erigeron pulchellus?

Janine, I think you've found the exact one! After looking through members' photos in the database, I see that my leaves look exactly like most of theirs.
The "Robin's Fleabane" blooms hardly look worth my keeping it, though
I'd rather it not invade my iris
Thank you