I've been waiting for my Yucca - Adam's Needle to come into full bloom and now it is.
I received this (Yucca - Adam's Needle- Spanish Bayonet) from a friend a few years ago and apparently neglect is causing it to bloom.
A while ago I watched an episode of Survivorman ( television show explaining how to survive when stranded in different environments) and he told us why it was called Adam's Needle.
I searched the internet but found very little references to it so I just had to try it myself.
At the end of the leaf is a very sharp needle and if you strip the leaf leaving a few strands of the tough fibers you end up with a needle and thread for emergency use.
I gave it a try and it worked well enough, although I think if the leaf was a bit dryer like in the fall or by letting it dry in the sum, the needle would be harder. It was very sharp and proved it could easily go through the skin on my fingers.
The Yucca is supposed to have roots that you can make soap from, if I ever move it I shall have to try it.