-
structure & bulk
-
compost
-
topsoil
-
coconut coir
-
cyathea trunk
-
wood fiber
aeration & drainage
-
sand
-
perlite
-
pumice
-
gravel
-
biochar (when activated)
water retention
-
coconut coir
-
vermiculite
-
clay
-
wood fiber
-
cyathea trunk (moderate)
nutrition
-
compost
-
worm castings
-
comfrey tea
-
rock dust
biological activation
-
worm castings
-
comfrey tea
-
compost
-
biochar (after inoculation)