I don’t see any that look like my Thalictrum seedlings.

Conversely, none of them looks like any of the commonest weeds. Next time try labels😉

Why not pot up a couple of each kind and see what they turn out to be.

Ok so now that I know they’re not weeds, should I bring them inside and let them grow more or should I keep them out in the freezing and let them go through their natural phase and get them to go dormant(if they’ll survive)? I’ve never had any seedlings grow at this time of the year so not sure what to do.

When did you sow those seeds? If they were sitting a long time, and just now germinated, with the cooler temperatures, they should overwinter safely, but I would most definitely put them in a sheltered area, that still allows them to get enough hours of sunlight. I have quite a few seedlings in pots that should overwinter. Curious, where did you obtain the Patrinia seeds? I know you already grow a few Patrinia scabiusifolia plants. Did your's finally bloom and set seed? My 3 plants seem to be very picky about how much light they get. 2 years and no flowers yet. Don't you get any Dracocephelum volunteers popping up around the parents, and if so, when?

I think you should wait till they grow more.

I think I sowed it either in September or October, probably September. When you mean overwinter can they continue to grow during the whole winter or do they naturally just go dormant even without freezing temps? I harvested my own patrinia seeds. They grew to be 6 ft tall on its second year. But I think they may have died. After flowering, like in October the whole plant started to die back and not just the flowers fading. I only got one volunteer dracocephalum seedling, they are pretty hard to grow from seed. I noticed there was one tiny one which must have germinated this spring but self sowed last year.

Overwintering just means they‘ll survive. They won’t grow, they’ll just sit there, dormant but not dead. Some perennials overwinter as evergreen basal foliage, some die back to the ground. Patrinia is not evergreen and the leaves die right back. But it should reappear next year.

The seedings won't continue to grow overwinter. They might take more color on their leaves like red and purple. They do photosynthesize all winter though. I doubt they would grow during warm spells, but not sure. My Patrinia were in too much shade. I'm cutting down the trees that were shading them. My plants shut down early this year. Your plants may have just gone dormant after blooming. Patrinia are closely related to Valerian, and my Valerian gets ratty after blooming. I'm just guessing. My Valerian does have some fresh basal leaves for winter now though. At least you have Patrinia seeds just in case. I left my Artemisia princeps in the pot. I seriously doubt the cold will kill it. I don't think anything could kill it. Lucky you, your Patrinia were beautiful.

I know patrinias are deciduous, my concern was that since it just started growing if it has the right temperature for it, it won’t go dormant and keep growing through the winter and messing up its cycle.

I think the one seedling on the bottom left flat top left corner is a patrinia. It looks similar to it when they first start emerging from the ground. I didn’t know they go dormant right after flowering, I guess we’ll find out about the patrinia next spring.

Don’t worry. Hardy perennials will look after themselves. Hence the name. They'll grow when conditions are right and it’ll stop when conditions are wrong. That’s normal. It won’t get ‘messed up.’