Movie with plant/vine growth?

[Lord T Hawkeye]

No, humans do not do emergency surgery on someone and then leave him to the mercy of the very thing that neccessitated it in the first place.

And seriously, what is with couples in movies having domestic disputes in the middle of life or death situations? You'd think that would be the last thing on people's minds at a time like that. -_-

but the plant is so cunning that it creeps me out at times....

Psh, I could do better. In fact I should some time.