Potatoes in plant bags?

I devoted a small area of my plot to a pond and useful flowers and ground cover plants, which has been haven to on average a dozen frogs, songbirds and hedgehogs who all patrol the potato bed against slugs and snails. Haven't had to control them much at all; even in the rainy year we've had.

I chitted potatoes last year, i gave half to my brother, i put mine in grow bags, earthed them up and fertilised them regularly, I got a few spuds and they were an okay size, I dont think i got as many as I would have liked, my brother threw his in my mums back garden flower border, he earthed them up if he remembered and added no fertiliser, he got loads of spuds and they were massive, so this year I am going to chill out, dig a hole and lash them in and hope for the best, I spent a bomb on vegetable compost and reckon i was well out of pocket, nope not this year