We grow a variety too! Ambo, Cara, Marfona and Nicola along with others I like to try. Had great success with Vales Emerald, a second early.
The Ambo are a Cara/Desiree cross and grow to huge potatoes, white one end and red the other. They are the best baker I have found closely followed by Cara and Marfona. Cara can be a problem for some people when cooking as it may go to porridge in the pan if cooked too long but it has very good blight resistance.
We also go down the no chemical route if possible. I use Dithane 945 for blight and last year we applied slug pellets for the first time as they were a major problem the previous year. We also try and use tons of good old cattle muck.
This year for us, the dry spell came wrong. The potatoes and onions stopped growing and never recovered. They died off early so we have lots of smallish potatoes. People will pay a premium for them in Tesco and Sainsburys but reject them from our sorting trays. Still there is always next year!
