I grow potatoes in pure seaweed.You just pile it up around the tubers and get a bumper crop.
In italy,when they plant tomatoes,they place a fish head in the mound of earth at the base of the plants.
If it's natural it just has to be good.
my faves are comfrey,borage,seaweed solution,calcified sea coral (ethicaly harvested) and anything from the rear end of an organicaly looked after animal.(no mass vacinations and organicaly fed). One thing I herd about fish emultion,is a build up of dioxins in the liver of the fish that worried me somewhat,but A+ FOR ORGANICS..KEEP IT GREEN . .Bng

P.S. Forgot to mention,if you get the chance,read about the findhorn foundation growing tecknics in scotland,they did what everyone said was impossible.a verry enlightening read.