dry potatoes year after year !

hello please can you help
i`ve been growing a varieties of potatoes now for a few years
but every year the same they are all very dry when boiled
just pulled some lovely looking Maris piper and red desires
but all was very dry when cooked
now i grow all my veg in big tubs my runner beans every year are fantastic
but year after year dry potatoes !!!!!
so this year i thought i`ll experiment watered them a lot this
so i ask this question why are all my potatoes DRY
thank you Paul

 

Paul, in what way are they "dry"?

 

I'm guessing floury as opposed to waxy?

 

Possibly Pete.

 

Over cooking? If they've been well watered and haven't flopped over and are a decent size.
You could try buying some of the same varieties and see if when cooked they turn out dry.

 

hello i grow some in tyres which turn out great but still dry after boiling
the rest in those potatoes bags you buy from wilkos est b&q
also use potato fertilizer as i build them up
i get good crops but sadly always dry when boiled
Maris peer. Maris piper. desire reds.international kidney.king Edwards.
Estima.Nicola.and a few others i have tried
all seem dry
thank you paul

 

Have you tried putting butter on them?

 

I do know what you mean paul.
Is it that kind of second skin, and the spud falls apart inside it when boiled?
So you mostly end up with mush.
With a bit of skin.