Posted: 09/02/2015 at 22:21
My nan had one in her garden and every year I used to cut it back by around half, but the trouble is you need to be wearing thick clothing and gloves, because it can give you nasty cuts!! People used to (and I believe some still do) set them on fire...this gets rid of all the dead stuff in the middle and makes the plant regenerate itself.
If it's in an awkward part of the garden and you're not 100% sure you want it there! I'd suggest getting rid of it and replacing it with something else you would like to see in your garden