A method of rooting plant cuttings in which high humidity is maintained in a greenhouse by an automatic system of watering with fine spray at regular intervals.
Origin
1950s; earliest use found in American Nurseryman.
Definition of mist propagation in US English:
mist propagation
noun
A method of rooting plant cuttings in which high humidity is maintained in a greenhouse by an automatic system of watering with fine spray at regular intervals.