its a good one, rade. you should plant it outdoor. as i can see yours could be one year old. mine are small ones. 2 or 3 leafs. mine are from wyoming, as it says in the web, pink white flowers and water in winter is no problem. glauca albertana is also good one for european climates. this is the cold hardest yucca there is, up to -40 C. it could be interesting to do hybrids in some years with those that are less cold hardy. hand pollination as benny does with his yuccas.