Can you help with my yucca trouble?

I just planted several yuccas last year (first time). From what I understand, they freeze and die off every year and come back in the spring (I’m in zone 7).

Warmer weather’s starting up, and many of my perennials have come out in full force. The yuccas are entirely yellow. Should I cut them back? Let them be? Am I impatient?

Any information on the web that I can find has attributed yellow leaves to either fungus or overwatering- neither of which I would guess was the problem.

Thanks!