Agave

[Isac]

This is an Agave Attenuata. Also known as the Agave Foxtail, Lion's tail and the Swan's neck.
They will keep growing and eventually flower and curve over to form the "neck".

[HansE]

Is that the flower? I amight have some growing here but have not seen that. The frost knocks it about.

[Isac]

That's the beginning of the flower development. This is when fully bloomed.
Image stolen from the WWW for educational and illustrational purposes only and is not for profit.

[Grumpy John]

It looks like something from a sci-fi movie.

[Isac]

They certainly look weird John. This is a close up (Macro?) of the flower's buds.