Nice yuccas! 😀

The first of two pictures you ask about... looks how my Yucca glaucas looked a year ago. They have since stiffened and shown filaments. The second photo, looks even more like glauca since there is more filament visible. Another possibility is Yucca constricta

Thanks for helping with id! Maybe it's glauca after all. I'm wondering because leaves are not narrow and there are not many of them. It's already forming a small trunk:

One of my unknown yuccas died some time ago, but new offpsring appeared. Six or maybe more small yuucas appeared:

Should I dig'em out before winter and pot up, ot leave'em be?

My plain ole' yucca filamentosa are sending up a ton of babies too.
A bit of a nuisance because they're filamentosa...(wish y.rostrata would do that 😕 )

Because the mother plant died, maybe leave one or two in situ, and dig up/pot the remainder?

That's quite the trunk your other one is forming already.
Nice!

Barb

Barb, I'm afraid it's gonna die next spring coz it's slowly turning yellow. Same happened to other one. I wish I'm wrong. I'm kinda get used to my little yucca and like it 😆

it's gonna die next spring coz it's slowly turning yellow

Maybe drainage (versus winter cold) is the problem?
The babies could be dug out and planted in a raised bed?

Barb

It already grows in raised bed and drainage is very good: lots of sand, gravel and a bit of garden soil.

Then it must've been your cold winter.

Are you going to pot up the babies?
They could get hardier with some age.
Barb

it's gonna die next spring coz it's slowly turning yellow

Maybe drainage (versus winter cold) is the problem?
The babies could be dug out and planted in a raised bed?

Barb

If it is not a drainage problem than it must be lack of water? Yellow leaf could be too much water, not enough, or lack of iron. They may need more water in the hot summer untill they get bigger? 😐

Welcome to the forum, and great shots!

If it is not a drainage problem than it must be lack of water? Yellow leaf could be too much water, not enough, or lack of iron. They may need more water in the hot summer untill they get bigger? 😐

I watered them maybe 3 times during summer. This may be an issue. If they survive, I'll give'em more water next summer and see what happens.
I'm gonna dig up few babies then and pot'em up.

Well the Summer here has really been a non event and we have had a lot of rainfall this year. However despite this the yuccas have done well and look healthy. Taking into consideration that Poland has much warmer Summers (according to my Polish friends I work with 😉 ) it stands to reason that they would benefit from more regular irrigation. The trick is knowing when to stop and to dry the soil out before the cold arrives. Marceli's predicament is to dry the soil out with a cover and wait for the snow to arrive to protect and insulate the ground and the Yuccas
BTW yellowing could be caused by the lack of Minerals in the soil as has already been said. I don't feed my Yuccas with NPK but once a month during the spring and Summer I give them a feed of Maxicrop seaweed plus iron which will promote root growth and green up the plants 😀

Next year I try more watering during the hottest periods and see what happens. I overwintered them under a roof (they grow together with cacti), so there were no snow insulation at all:

That is how I cover my plants, looks good! 😀

Looks funny, but proved to be effective during last winter 🙂