Mixed results and so far I've had better results growing from left-over spuds from the supermarket rather than bought in seed potatoes.
Last years spent compost (After harvesting the spuds) was used to top up one of my raised vegetable beds...
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As a result a few tiny (mm's) tubers must have found their way into plot..
So I had some "accidental potato" plants growing where they shouldn't.. today I cleared the bed and dug out one of the plants..
Ladies & Gentlemen... the accidental potato