Composition of Supermix by Plagron:
Organically bound nitrogen 1.2%%
Water soluble phosphorus pentoxide 1,6%
Water soluble potassium oxide 0,35%
Solid fertilizer mix (NPK)
Feather meal
Guano Peru
Seaweed meal
Bone meal
Lava flour
Basalt
Rock phosphate
Seaweed maërl
Bentonite
You can also buy Plagron at themariashop.com