Looks like a weedy geranium/cranesbill - G. robertianum or G. carolinianum or whatever grows commonly in your area.

One of the corydalis, perhaps. They love to grow among stones.

Thank you!

Geranium robertianum. 100% sure of it.

Yep. Should be able to handle it and get the characteristic strong aroma.

Thanks all. Interestingly, it doesn’t have much of a scent at all and the faint scent it has isn’t geranium-like. I’ll move it and hopefully it will continue to grow.

Rub it a bit. It's rank. Not like a garden geranium at all. I wouldn't bother to try moving it. It is not likely to be successful and anyway you're likely to end up with more. It's a selfseeder and considered a weed by most gardeners in a cultivated setting. The plants are attractive when young but they're annual and once it starts to set seed it'll grow sprawling and scraggly before dying. https://www.rhs.org.uk/advice/profile?pid=991

Thanks Floral, though faint (the plant is tiny) rank is a good description of the scent. I moved it before seeing your response and the link. I’m on the lookout for native plants that are somewhat aggressive whether perennials or enthusiastic reseeders. I have a lot of areas - basically the transitional areas between the lawn and the woods. As for conditions, there‘s a little of everything. Some areas are full sun, part shade or dappled shade; clay, and rich loam soil; dry and moist. A constant among them is that our yard is a deer haven. They eat everything except barberry, poison ivy, garlic mustard and any number of other nuisance plants. I’ve come to accept that deer resistant means, generally, that the plant can tolerate being browsed (or even benefit from it, like a forsythia hedge). This might not be the right forum to ask, but suggestions are welcome. Thanks!

Deer have a habit of changing their diet depending on where they are located but Ornamental grasses, Coreopsis, Aconitum, Aruncus sp., Kirengeshoma, Phlox stolonifera, Ajuga, all Iris sp., Crocosmia, Veronica, Nepeta, Limonium latifolium, Artemisia, Lavender, Salvia (generally anything with a strong scent to the foliage). They will browse certain Geranium and leave others alone. I am sure I will think of others, I live in an area with an abundance of deer to say the least.

Thanks! Also, what they ignore one season might be a bit more appealing during a subsequent season. If I spray stuff I think is at risk, they‘ll eat whatever is most appealing to them from among the plants I haven’t sprayed, even if they’ve never touched them before. I fence in new shrubs (other than spirea which I transplanted from a fenced in area - they are one tough shrub). Shrubs that are evergreen have to be wrapped/netted for the winter. While I’ve had good results with some of the plants you suggested, there are a couple I haven’t been able to grow successfully, salvia, for example, but there are a bunch you mentioned that I’ll definitely look into.

So true! They ignored Polygonatum - Solomon's Seal for decades then last year gobbled up huge patches. Also true that I sprayed anything at dire risk like Hosta the buds on Daylilies etc. All the ones I listed they never touch, period. Knock on wood....