Any ideas what the ideal proportion of nitrogen, phosphorous and potassium
is for heaths and heathers. I've just purchased a soil testing kit, but it
seems pointless testing the soil if I don't know the levels at which the
plants require their nutrition.

I've got the ph levels just about right now, but am unsure about what level
of nutrition I should be aiming for. The first test shows that nitrogen
levels are pretty low. I think that is supposed to be good for heathers - am
I correct?

Alex