Help with Id on moss uk

[Mattsdoneitagain]

Morning all
Can anyone Id this please the kids brought it home from a walk, I just tied it around some bamboo cane and tucked it in it’s been in around 3 weeks.
Also just noticed in the pic some stag horn I think in the rotala below.

Thanks

 

[Mike Singh]

Where did they get the moss from?

 

[Mattsdoneitagain]

I’m not sure to be honest. It seems to have survived and looks to be new shoots