I make a kick ass organic fert from Russian Comfrey, thought I would write a post outlining my method for those who are interested. The correct strain of Comfrey is Bocking 14 - easily found on line - comes as a root -costs about 1 a root - this is the only time you will have to buy anything. Plant in accordance with the supplier´s instructions. If you have a damp spot in your garden, that is a great place to plant the Comfrey roots. Here is my Comfrey bed. Get a large plastic bottle - I find a 8 litre mineral water bottle to be fine. Fill it 2/3 with water, then pull leaves off the comfrey and stuff them in the bottle until it is very full. Every day shake the bottle and unscrew the cap to release the gases that accumulate - they smell like a fart to be proud of. After two weeks pick more leaves and stuff the bottle full again - keep on shaking. After a month you are ready to strain the concoction, pass it through a sieve and remove the remaining solid material. This can be dug in as a solid fert but also makes a good compost activator. The final product is a dark, very smelly liquid that is diluted 20:1 with water and fed to your girls.