Hyssopus officinalis?

Something in the mint fanily, Lamiaceae, based on square stem, plant and floral/seed structure, and scent. But it is a large family. Are there any nearby that still have flowers?

No, not that I've noticed, Babs. The scent is almost medicinal, menthol-like. @peren.all, I've looked at images of hyssop o. but still not sure...

Is the stem square? I’ve blown the image up but still can’t see that.

Floral, no, the stem is round. I found something called mentha arvensis. Could this be it?

Mentha arvensis stems are squrate. Does it have rhizomatous roots?

Windberry, no, root system is fine and they each pull up easily and individually.

The whole Mentha genus has rhizomatous/stoloniferous roots, so it is not Mentha. Sorry can't say what it could be though.

BTW had a good laugh at those squarate stems, don't know how it got there, of course I had square in mind.

Absolutely Pennyroyal, Hedeoma pulegioides, like Jekeesl says. Those are nice closeups; the plant is really small and nondescript growing in the wild. I normally find it because I smell it first when I brush against it while walking; then I look around and there it is. (Actually I say that but there's a bunch of species listed by USDA and I didn't try to key it out; it looks like the one around here, though.)

As weedwoman said, there are many species - some with very small distributions. I did not try to key this one out, either, because FNA does not provide a key. Also, pulegioiides and hispida (much more narrow leaves, and flowers earlier in the season) are by far the most common. It could be one of those local types, so if the OP wants to consider other speices, they can check the BONAP distribution maps here for more options. It's too bad that Cat didn't provide a location for her plants.

I am in NJ, jekeesl, and I think both you and weedwoman got it. I read the description for h. pulegiodes and it is spot on! Thank you, all!

Use the botanical name if you do any research, cat56. In my part of the world Pennyroyal is Mentha pulegiodes and that is not what you have.

That's interesting, I didn't know about the European species. Wonder if the smell is similar. For such a small plant the American Pennyroyal (Hedeoma) is REALLY pungent.

I pulled the rest of the bunch today and choked because the aroma was so intense. I don't find it in any other part the property and honestly wouldn't mind if it grew on the edge of our woods because of the deer. Pressure gets intense at this time of the year.