Spuds in tubs - all leafy growth....

and no spuds.  What am I doing wrong please?  Seem to recall last year was the same.  They were fed and watered.  I have done them this way before and I have had lovely crops.  This year I planted a mix of tubers including some early varieties like International Kidney (okay, I know its not called that unless you are on a channel island, but its the same variety - just can't think of the actual name at the moment!!)

Thanks
OG

Thanks JayG.  I was sort of right then!  I fed them with nitrogen granules mixed into the compost.  Guess I fed them too much.  Will remember for next year.  Thanks again.

And too much water will also encourage a lot of leafing and no spuds. Potatoes are better growing on the dry side than wet.

I grow my spuds in raised beds. Really good mixture of soil and compost. This year, I took off the top 6" and saved it in old compost sacks. The beds were given a good sprinkling of Growmore and dug well in 2 weeks before planting. As the haulms grew, I kept heaping up around them with the soil I saved in bags. I had also given this soil the growmore treatment. The only spuds I've dug up so far are Kestrel. They have thrown lots of foliage. The crop wasn't bad, but I've had better. Smaller spuds than I have had in the past even after leaving in 20+ weeks. All my maincrop got the same treatment and have all thrown massess of foliage. It remains to be seen what the crops are like. I suspect from what I've read on here that I've over-egged it with the growmore by using the  "More fertiliser has to give bigger crops" mentallity.

Yes, I do rotate the beds with other stuff.

Mine in tubs were fairly rubbish wont bother next year as they do so much better in the ground....... Well i say that all did well in the ground apart from red duke of yorks which were rubbish all round 

To be honest cost more in compost than we harvested so next year its in the ground direct and get on with it.

So basically, they need a good kickstart and then very little after that?

I grew 10 bags of potatoes this year - I had 6 in the back garden and 4 on the lottie and they were all planted in the same way, fed the same way and watered the same way.
 All cropped well apart from 2 bags of PFA in the garden where . Got a total of 5 tiny tubers from 10 seed potatoes Loads of leafy growth though

No idea why!

Oh incidently I got a huge crop of PFA from 4 of the other tubs! The other 4 had Belle de Fontaney in and they produced a big crop too - just so you know it wasn't the actual variety or seed potato that was the problem!