David WE Roberts wrote:
However I have heard that they can be invasive and difficult to remove if
you get tired of them.
How easy are they to control?

We planted some 4 years ago, didn't like them, and have not been able to get
shut of them since! One even cropped up at home recently, so not quite sure
how that happened! They grow back grow back from the tiniest slither of the
tuber, too, so if you dig them out and accidentally slice a bit, it'll be
back.

Although to be fair, probably still not as invasive as some of the purple
potatoes we tried the year after ...