[Kristen]

MY beds run North-South and I have planted the Comfrey in the North end of each bed.  I've got about 10 beds, 4 or 5 of them have Comfrey at the North end, the others have other perennial veg - Globe / Jerusalem Artichoke, Rhubarb, etc.

[LotuSeed]

Just to update this in case anyone else might be interested in this topic. I'll be sowing crimson clover at the end of Autumn to use as a green manure. For this growing season I've got hold of and organic, vegan fertiliser that is supposed to be general purpose.
It's made by a company called Down to Earth.
http://www.groworganic.com/vegan-mix-3-2-2-6-lb-box.html