[graemeatwellbank]

Just had a bumper crop of GREEN potatoes.
Whoever said there was no need to earth up potatoes got it wrong.

[chrismahon]

If they aren't deep enough to avoid all sunlight they go green and I seem to remember reading they are then toxic, so unfit to eat even if cooked. Our few green ones go onto the compost, but it is only a few because to retain the moisture we use leaf mulch on the South face and that excludes sunlight, even from those near the surface.

[Terry T]

We earth up once the tubers start forming on the maincrop. We plant alternate rows of earlies and maincrop and when I harvest the earlies I put their soil over my maincrop rows.
All a bit of a learning curve - but hopefully you’ll avoid green potatoes next year.
And yes, green potatoes are toxic - with accumulation of the toxins even in the white bits unfortunately.

[Fleecewife]

Oh what a shame - you must be so disappointed. The only time I have heard of gardeners saying you don't have to earth up is if you grow your spuds under a black sheet, or cover with a thick layer of straw or grass clippings.  I love earthing up my spuds.  I do it early on to protect the first leaves from frost then a couple of times more until the foliage is too long to get between the rows.  I space my rows wider than recommended so I can get the Mantis between them to weed and loosen the soil ready to earth up.  I plant the tubers a good trowel's depth then the spuds develop in the mound I create from earthing up.
The only short cut I'm aware of in gardening is using a thick mulch, or black plastic to grow crops through but help keep down the weeds. 

[Ghdp]

That is a pity.
This year was a bit hit and miss with spuds as the seed potatoes were so late arriving and in desperation, as suggested by some forum members, I put some sprouting spuds from the kitchen into an old garden waste sack and topped that up with soil from around the garden as and when I could and the end result was much better than the ground sown potatoes I also planted late and the 'earthing up' was easier. 

[sabrina]

I lifted a few last night and was veryshocked at just how dry the ground is. Not as many as we have had in the past which I expect is due to lack of rain.We are on private water so have had to be careful over the summer how we use it due to the dry Spring.

[oor wullie]

Yeah, I've made myself feel sick by eating green potatoes, don't do it, it's not nice.  In my defence they were not very green and it was hard to tell.

If you don't earth up then plant them deep and accept the occasional one needs binned, above all (if you are anywhere like where I am) ensure that every single pheasant that even looks at you potatoes dies of high velocity lead poisoning (they scratch them up and leave them on the surface to go green).