Mystery plant?? Anyone identify it?

Hi all
I have grown these in my garden after my Mum was given a bag of tubers and was tole they were artichokes. I planted them and protected them from the slugs but clearly they are not artichokes and I do not know if they are friends or foe! They have been steadily getting taller and taller. Are they going to flower? Their leaves are quite hairy. I'd be really interested to know what they are!
Many thanks

 

Hi limetree, they look like Jerusalem Artichokes. They are not really the true artichoke but a member of the sunflower family. It is the knobbly roots that are cooked and eaten, like turnips or spuds, but beware: they are notoriously 'windy'!
Info for you:
http://www.eattheseasons.co.uk/Archive/jerusalem_artichoke.htm

 

And yes jerusalem artichokes do flower especially in a good summer - small sunflower type flowers on stems about 8ft high!