That looks like Queen Anne's Lace, another carrot relative.

wiki
"Giant hogweed is a phototoxic plant. Its sap can cause phytophotodermatitis (severe skin inflammations) when the skin is exposed to sunlight or to ultraviolet rays. Initially, the skin colours red and starts itching. Then blisters form as it burns within 48 hours. They form black or purplish scars that can last several years. Hospitalisation may be necessary.[7] Presence of minute amounts of sap in the eyes can lead to temporary or even permanent blindness.[11] These reactions are caused by the presence of linear derivatives of furocoumarin in its leaves, roots, stems, flowers and seeds. These chemicals can get into the nucleus of the epithelial cells, forming a bond with the DNA, causing the cells to die. The brown colour is caused by the production of melanin by furocoumarins."

Giant Hogweed Do Not Touch This Plant!

From Washington State
Giant hogweed

Sheilajoyce, there's a link at the bottom for Hogweed Identification. While the flowers look a lot like Queen Anne's Lace, the rest of the plant doesn't. I don't think I've ever seen it here.

Good to know, Susan, thanks. I heard it was dangerous, but this was more informative. I hope it stays away.

That's weird, because if it's the same thing that grew wild on the mountain we used to live on I used to pick it all the time and use it in flower arrangements. Never bothered me.

I saw it (and gingerly touched it with the results as noted in a tiny area. of my hand.... itched and burned......not fun).....when we were traveling in Alaska. Seems like it had an odor.... or maybe it was near to skunk weed.

There are others that look very similar in close family relation but are not this plant. It is not that wide spread in the US yet. The northern most states and some coastal area to the North.
You would definitely know if you touched one of these there is no doubt. And I would definitely NOT try it just to see. Many are hospitalized from a close encounter and blindness is a definite possibility.
It is one I have notified our garden club about to be on the look out for and contact the proper authorities if it is spotted.

The Cow Parsnip looks very similar too and can get quite sizeable. I think that's what the specimen is I've got growing in a juniper hedge. Pulls up fairly easily (but keeps coming back!). I've pulled it bare handed with no reaction whatsoever; whatever look alike I've got doesn't appear to be toxic in any way.

In the garden just outside our back door I found a plant that looked like carrot or parsley and thought that perhaps the previous owner might have planted it, or it might at least be queen anne's lace, which is weedy, but decorative. When I pulled one up it had a small white "carrot" beneath it. I researched it a little more and found out that it was poison hemlock, which is not poisonous to touch, but if consumed can be lethal. It's a real good thing I didn't decide to see whether the carrot-loving horses might like it.

This hogweed plant was recently found in Michigan. Roundup kills it which is good to know.

hogweed is very common up here in my area

This was reported in MI a year ago, I believe in the lower peninsula. It's a whole lot different than what we called hogweed when I was growing up back in Nebraska.

We have it here. It's very dangerous as the sap can burn your skin. When it shows up the city goes out and destroys it. I've seen it growing along walking trails. It is huge too, it grows taller than me (I'm 5'8").