I 'grew' this for awhile....probably growing still in my old garden :-) Not sure if I purchased the plant intentionally - might have, cuz I bought a LOT of different things that caught my eye - or if it hitchhiked in with another. Yes, it was weedy......very weedy. In fact ALL hieracium are listed as noxious weeds in WA state but that does not mean they are restricted from sale if deemed to be "ornamental". If you can stop the plant from flowering it will help but IMO, not worth the effort. Just don't plant it, it's a pest!

Thanks much for the info gardengal! Yes, that was the reason I thought to ask- saw that some other Hieraciums were listed as weeds in WA (though didn't see maculatum on the list I looked at). My philosophy is why plant something that is going to take over your garden when there are so many other nice plants out there that look the same and act better. I DO NOT need more weedy plants in my garden!
Thanks again ;-)
CMK

I'm not sure that "taking over the garden" is exactly how I'd describe it but it certainly can be a pest popping up all over the place......and not all that easy to remove as it has a bit of taproot, similar to dandelions. I also agree that there are so many other, less troublesome, more attractive plants to focus on or include in one's garden :-) And if not specified by species, the hieraciums are listed as Class A (least offensive) noxious weeds, with only a few species listed as Class B or C, requiring more stringent control measures.
They don't call them hawkweeds for nothing!! LOL!