Aaron, I really don't question your success with your technique on getting your yucca to grow a trunk, but real filamentosas do not trunk. I suspect w...
I don't think you can prevent the death of that particular rosette of leaves by cutting off the flower stem before it blooms. Once the yucca sends up ...
I have two of them growing from the tops of pineapples. The largest one was planted in July 2001 and still nothing yet. I don't really baby it though ...