Posted: 25/01/2014 at 15:13
You certainly can divide strawberries, it is sometimes done commercially for varieties that produce few runners - in particular perpetual and day-neutral varieties, as well as 'alpine' strawberries that do not produce any runners.
Personally, I don't think now would be the best time - better to wait until early spring just before active growth starts again. Remove all the top growth before dividing very carefully and re-plant in fresh soil 15" apart. Make sure they are watered well during dry periods until established.
However it must be stressed that taking runners in the Summer is a better method of increase, the resultant plants will be more vigorous and the mother plants will of course still crop.