Wow, these blossoms, that's wonderful :D. And these huge palm trees! Haha. That's really charming :). I know the Yucca palm, I have 3 plants of it, but they are about as high as the cars and flowered of it has none yet. In spring, summer and autumn I have them in the garden and in winter I put them in the cellar.
I don't know how long before Yuccas bloom. But the ones around the apartment looks rather old. You will have to be patient. 😊