Okay, but without further information, all we can do is assume its suffering from drought and suggest you leave the hose trickling at the base of the plant for a couple of hours, assuming its in the ground.

Thanks, have added a Photo will this help

how long's it been planted there?

Around a year

Well, it may now actually be dead, but it certainly looks like a bad case of drought...

Thanks for the information, will leave it in the ground and let you know how it get on