Humus:
Figure 5.21 - Humus
Is the organic constituent of soil, formed
by the decomposition of plant materials and can
be bought in bags at the local gardening shop.
Most of these products try to eliminate bugs
and other living matter from the soil but
sometimes this is not 100% successful. Don’t be
too surprised if you find a worm or green fly
in the package. Humus is also sometimes known
as compost, but compost is the final mixture of
manure (which is of organic origin), loam soil
and some other mediums with added organic
matter. Humus is that added organic matter
stuff.
