Posted: 09/06/2012 at 21:38
Not really-there are 3 main types and lots of varieties, what variety you grow will fit into one of the types-so you can start them all of at the same time but some take longer to mature for example- early rocket,2nd early kestrel, maincrop king edward
This probably explains it better than I can
http://www.lovepotatoes.co.uk/the-potato/potato-varieties/