Living and Gardening in Brittany

I am experimenting with advice from a book that I bought about organic pesticides. So far I have tried coffee but I haven't noticed that it worked. The second try was with garlic. I think this was more successful. I tried it on the canna lilies and the dahlias.   

I have made fertiliser from comfrey and nettles. I used the comfrey a couple of days ago and I swear the geraniums have flourished incredibly. Must make more and used frequently.