JADAM Potting soil mix by Youngsang Cho

30% IMO4

30% granite dust

20% leaf mold (can substitute good quality compost)

20% biochar (rice hull is traditional, but other biochar is acceptable)

JADAM Seed Start Soil Mix:

30% IMO4

30% leaf mold (can substitute good quality compost)

30% red soil

10% biochar