geraniums- do i cut them back

Hello all! I have quite a few hardy genaiums that are now past their best and looking a bit straggly. Is it ok to cut them right bacl to almost ground level? do i need to do anything like feed them after I have done this?

 

Cutting back won't hurt and should give fresh leaves and flowers. Geraniums are greedy feeders so organic grub will delight them.

 

great thanks! I have some horesy pooh thats been lying about for a bit,they should like that!