Hi Gloworm,
I do not know how much Comfrey you are growing but I somehow think you are missing a trick if only use it as you state.
You do not mention Tomatoes and do not know if you do or do not grow them but bedded in Comfrey Compost and using Comfrey Concentrate dilute as the designated feed from set of first truss has amazing results. Tomatoes with a superb flavour and very thin skinned.
Strangely when making Comfrey Concentrate the starter used is urine and that very soon gets the ball rolling.
JB.
