I love them, but unfortunately my benign neglect has left me with a population that can withstand frost but has tiny yields. Oops
Once they're going, they need very little. The foliage will flop and wilt if it's a bit hot, but recovers. The flopping also helps shade out weeds. I've not know them be troubled by pests.
You can add horti fleece in late autumn to extend their time growing (tuber formation depends on short days, so the gamble is between day length and frost damage). However, earthing up to keep warm has the effect of lots of little extra tubers forming instead of the existing ones growing in size.