Are there any natural fertilizers high in phosphorus. ?

Question

Are there any natural fertilizers high in phosphorus. ?

Answer 1

Bone meal or rock phosphate.

Answer 2

Catz has it right, bone meal and rock phosphate,  although rock phosphate takes a long time to become available to the plant.  Wood ash is a source of potash not phosphorus.  Depending on the wood, as much as ten percent potash to 1 percent phosphorus.  Plus, wood ash is pretty alkaline.  

Answer 3

Fresh wood ash.

Answer 4

Who here throws away their bbq coal ash? Not me it goes into the compost pile.

Answer 5

seaweed