METHOD OF PREPARING SOIL FOR GROWING ORCHIDS Russian patent published in 2020 - IPC A01G24/23 A01G22/63 

FIELD: gardening.

SUBSTANCE: method involves stages of mechanical grinding of pine bark, tumbling of crushed bark in a tumbling machine with possibility of separation from bark of debris and dirt particles, peels, lenticels and other protruding cortex flakes and sorting the tumbled bark into fractions in groups of 5 to 8 mm, from 8 to 13 mm, from 13 to 19 mm, from 19 to 28 mm, from 28 to 35 mm and from 35 to 70 mm. When tumbling of bark is performed, visual control of its appearance is performed.

EFFECT: method provides longer service life of soil.

1 cl