Most definitely Fall Crocus. They'll be gone quick. Dig up the bulbs and plant them under a shady tree. No care needed and they're a great reminder that spring is close this time of year as you just found. They're often used for plant timing in gardens. Don't get rid of them.

Not to further confuse, but Stylophorum is rather rare in that part of the Chicago region. Chelidonium majus looks very much a smaller version of Stylophorum diphyllum. While I can't tell which it is by the photo, you can separate them easily once they fruit shortly after flowering. Chelidonium majus has a long, smooth fruit with no style while Stylophorum diphyllum has a shorter, bristly fruit with a long style.

I love white lilacs and free is always the best price! I changed my center bed to a circle and my son gave me a great idea to put a bean teepee in the center. Now I'm not sure what to edge it with. I won't have enough marigold and alyssum but I do have 9 pink/yellow mini roses. (good sale at the food store before Mother's Day.) But, today, I also thought about adding in some globe basil to look like little boxwoods. Or, should I scrap that and just direct sow some dwarf zinnia and sunflower. I also switched from attempting a step-over dwarf pear hedge to installing 4 blueberry bushes to divide the potager from the hop yard. I still would love to try the step-over pears, but unfortunately, only so much time in the weekend and my wallet seems to be filled with receipts instead of dollars at the moment.

I've got volunteer periwinkles from about three years ago that grew before I turned the spot into a vegetable garden. Every year I see a couple new seedlings pop up. I also have a volunteer dill from last year's seed. It came up in the middle of the beet patch and I'm just letting it grow. My Swamp Milkweed that I planted last year dropped some seeds (I was careful to harvest pods before they burst open, but I still missed a few). I've got lots of milkweed volunteers coming up all over the place. So far, I haven't got a tomato volunteer yet. And on the subject of Santa grape tomatoes - if they still have them at our grocery store, I may have to try saving some seeds and growing them out sometime. Sounds interesting.