Alien plant form

I have no idea what this is, but they do have some very strange and alien looking plants on Tresco. I'm sure I saw an eyeball up in the branches winking at me.........😁

[Casablanca 🇬🇧]

Oh my word, that is a positive Triffid!

[Kitty Hawke]

haha.....he is fab....

[Diana]

Well spotted and captured.

[Susan Wakely]

It looks like a giant succulent that has forgotten to stop growing.

[KoalaGardens🐨]

it's a type of agave - the plant will die after the flower finishes

[Neil]

Wired and wonderful.