Yucca, Cordyline or Carex?

Hi All

I don't have a picture as it was dark when i got home from work tonight, and didn't want to go into a pitch black garden to get the plant, so i'll explain: I got given a plant that has seeded into my Mams garden, it has very stiff straight green leaves, which are now a good 10 inches high.

A neighbour has told me it is a carex, but it doesn't look like his plant to me, but then it is young and his plant is a lot older, but the leaves on the carex also looks alot softer. How would i know the difference, it actually feels like my cordyline? Any ideas? I'l get a picture as soon as i can.

 

Carex and Cordyline do look quite similar when young however if it self seeded then it's most likely a Sedge (Carex)

 

Thanks for the help with this, is a carex invasive? I don't want to put it in the garden until i know a) how big it will get and b) what conditions it is suited to.

 

I think that sums it up

depending on which carex it is (if it even is a carex:WINK1 it could get to about over 2m wide and about a metre tall and they self seed prolifically coming up in cracks in paving slabs and in every possible nook and cranny however as long as you stay on top of it you should be fine:D

of course that's just my opinion after living next to woodland with lots of Carex pendula and some people actually go out of their way to plant them

 

I've got a few different types of Carex here and they're not at all invasive, i think a lot depends on the specific gardens conditions.
I'm desperately trying to think of their names .....
Buchannii is one, Hachhijoensis, Testacea and Flagellifera - there we are, did it

 

Thank you for your replies - i will post a picture at the weekend, this way you may recognise what it is. There are lots of different grass type plants in gardens around my parents, phormiums/cordylines/yucca/redhot pokers/pampass grass/could be any of them to me.

Also, searched around her driveway and path and managed to find 5 baby croscosmia's or monbretia, won't know until they flower, but i just love finding FREE plants:yess: