I'm usually good at this game, but this one has me stumped.

The basics: zone 7, part sun and shade. This is growing in the "birdfeeder garden." It was a volunteer that took off.

Specifics: It grows like mint -- aggressive/borderline invasive, with similar root structure. Leaves are opposite and in pairs, like Noah's animals. Square stem. It is very hardy, tolerating foot traffic. Sure looks and grows like a mint, but here's the catch: it has no fragrance, including when brushed or crushed (as in rolled up in one's hands). No flower or bloom as of yet. I'm baffled.

As for the images, I included my garden sneaker some of the pics for scale (size 10 - men, if you were wondering).

So far, I, and a friend and long-time gardener and member here on Long Island, and buddy who happens to be a NY Master Gardener have yet to come up with the answer.












(this one shown growing with sweet woodruff and edging lobelia)

Three plants I can think of that are not mints and do not smell but do have square stems: Loosestrife, Verbena, Stinging Nettle.

That's all I've got.

Daisy

And that's where I went, yet no pics of the aforementioned fit. I may have to wait until bloom time.

The look of it, and leaf venation, suggests Prunella vulgaris .. Selfheal. It's quite pretty! I have it growing here and there, some I have to dig up, it's native but I didn't have to buy the seed as it's growing in my garden naturally. I hate to dig any up but I always have some.

http://wildseed.co.uk/species/...

Thanks, @JRsbugs. I'm pretty certain you've nailed it. Prunella vulgaris fits the description of what I've got growing. It does require some vigilance, but seems to be manageable for now. I'm marking this as solved, and will keep an eye out for the blooms.

I agree, Self-heal (Prunella vulgaris)

Bees do like it, I had to search around to make sure I still had some which I know I have, but it always seems to be the healthiest, most robust plants I have to remove. If growing in an ideal situation the plants can be impressive, I'm always in two minds as to whether I should replant them and sometimes I do if I can find a gap to put them in. They started out growing amongst grass 'lawn' where they got cut back, at first I didn't appreciate them like I do now.

Janet, I'm currently allowing them to grow to fill out some spots, and with your comments am willing to let some be. Thanks again.