Yucca species ?- California

tree dracena or dragon tree. looks spectacular if by itself..

Bot. names pl., if possible.

its any body’s guess to name something photographed in a hurry and not totally…
here I’m not sure if its a one stem coming out of the ground and then dividing or several branching individuals planted close by…
individual tuft looks like the familiar houseplant we have all have had in our homes or seen it in nurseries… dracena marginata… or d. madagascar…
but if allowed to grow in the ground or a la..a..arge tub and given freedom to grow..it would branch and may be look like this. I have had some that branched two or three times during the hottest of the summers… then fell over and died during hurricane aila …
the d. cinnabari and c. draco when fully grown, each gets a broccoli like head full of these tufts but has a tight branching pattern and one stem… googling gets one the pictures..
so there is my input…
this plant looks like its filling a space in a garden where there is something to hide .. like garbage dump perhaps?… see the brown boundary wall section…?
beyond this … anybody’s guess