A few growers place charcoal in the bottom of containers to absorb excess salts and maintain sweet soil, if plants are grown more than a few months.
People who grow plants with charcoal at the bottom of the pots have more experience
( z1 experience :ARG0 ( z2 person :ARG0-of ( z3 grow :ARG1 ( z4 plant ) :instrument ( z5 charcoal :location ( z6 bottom :part-of ( z7 pot ) ) ) ) ) :quant ( z8 more ) )