It is occasionally possible but not worth the effort. You can keep them alive but to develop the red bracts needs a rather fussy regimen of light/dark/heat that's pretty challenging in our climate.

I know some do manage to keep them going,but I find them so reasonable in certain supermarkets,its hardly worth the bother..but if you like a challenge, you could google it for aftercare instructions..

Thanks for replies. I dont think I'll bother, as one reply said they are very cheap around Christmas. I'll just keep it for as long as it is in flower. Thanks again

Hi Beryl not to be pedantic but what your are seeing is red bracts. The flowers are tiny and insignificant and would have been over months ago. Once the red bracts fade I'd compost.