well, to actually use it,,,you got to be willing to put a lot more stuff with it,,,i.m.o.
if im making a growing medium that i want to be the best medium possible, it is a major ingrediant,,,
i usually try to mix for the perfect medium
mushroom compost,
worm casting's
bat guano
neutral potting soil
perlite
and depending on how i want the beggining ,of the plants nitrogen intake to be, i may add other ingrediant's, to the mix { minor trace elements ]
but i dont make that type of mix, unless im doing something like orchids, or some special plants, i want to do 150% of what they are suppose to do, or a indoor container plant,,
i have nt done no serious gardening in years, i right now, just plant some big shade annuals in the front, and maybe a mmonflower, and morning glories,,
but at one time i used to go all out, and each summer my whole yard would be a jungle, stuff growing everywhere,
i still have 4 rose bushe's.{ remenents of those days gone ] and they are still doing strong, each year,
perhaps, im old enough to supervise the planting now,????
but my 2 girls dont do much gardening,