is organic humus soiless?
is commercial compost manure soiless?
cricket
organic humus
I wouldnt think so, I think soil less is more on the lines of
perlite , growrocks (clay balls) , coco coir (shreaded coconut husks).
Soilless would be just a medium to hold the plant , something for the roots
to grow in but has no nutrients for the plant.