The second picture of the unknown appears to have flowers or calyxes at leaf axils in a couple of spots. Looks weedy to me.

Is picture 2 just one plant? Looks like a dandelion with another small seedling in the center.

The picture I mention is below " the unknown" and number 2 photo.

Triodanis perfoliata???

callirhoe123, pretty sure it's one plant and pretty sure it's a cardinal flower, but you are having me second guess! Seedlings are like a box of chocolates ! Time will tell.

floraluk2, you may be right, and I have added that plant to my landscape. It did enter my mind and decided to pot them instead of discarding. Glad I did, I will find them a home.

Thanks to all

Plant in pic 2 appears to have rough leaves, so not Taraxacum. You could test by tearing a leaf. T. Would have milky sap.

No milky sap

Old Forester. Maybe Youngia japonica for number 2? For the other compare with Kickxia spuria. The Kickxia must be moving south. This might be a new record, if it is Kickxia. I can report it to the Flora. Kickxia spuria is not native. It has a very interesting flower. It's in Plantaginaceae.

Jay, you made me do some deep thinking to remember those plants. If I remember correctly, pic 1, was indeed Silene Regia. Picture #2 was not Cardinal flower, in fact I had no Lobelia seeds germinate. The rest were Triodanis perfoliata, I think. What was puzzling is I did have numerous seedlings that as best as I could identify turned out to be Silene spinescens. Cant remember if pic 2 was one of them. Have no idea where those seeds would have come from.

#1 is Silene regia. I dont think #2 is Silene spinescens. I don't see any north American observations for Silene spinescens. I cant even find a photo of Silene spinescens leaves. I still think its Youngia japonica or another species in the Asteracese Chicory tribe. I still think Kickxia spuria is a better match thsn Triodanis perfoliatus because the leaves arent perfoliate or heavily clasping, and the stems have more pubescence than Triodanis perfoliatus stems.

I kept all the seedlings until they bloomed. The seedlings were definitely Triadanis. Pic 2 bloomed and was not Youngia japonica. Didn't keep any pics of the bloom but it matched Silene spinescens. Thanks for the feedback.

1. Old Forester, where did the Silene spinescens come from? It's not listed in Weakley's Flora of the Southeastern United States, there are no seeds or plants available for it online. There isn't a simgle observation for it in North America?It's a subshrub that grows in arid conditions in southeastern Greece? The flimsy rosette doesn't seem to match a xeric subshrub? Im going to get a second opinion about the Triodanis also. The leaves are definately not perfoliate.

Silene spinescens

Yes, it is Triodanis perfoliata. I didn't know the petioles were so variable, so,chock up another one for floral.😒

I could not identify the Silene even after it bloomed, never seen anything like it. A friend of mine has a plant identifier app that I have tested many many times, it's quite accurate. The app called it Silene spinescens. Did some online research and it matched. Have no idea where the seed came from. I had around a dozen of the seedlings. They perished right after they bloomed.