I am using an 8-7-6 organic fertilizer at the moment. The last was also an organic but 7-7-5. They mainly sell pre-mixed fertilizers which is sometimes very irritating. Right now I am looking for bone meal but since the BSE scare a couple of years ago, is an impossibility to find! Plain old Super Phosphate - forget it!! Oh they do sell it but only to the farmers in bulk 100kg bags!