a plastic bag containing a sufficient amount of a sterile growing medium and nutrients to enable a plant, such as a tomato or pepper, to be grown to full size in it, usually for one season only
Word origin
C20: from Gro-bag, trademark for the first ones marketed
Examples of 'grow bag' in a sentence
grow bag
Remove some of the compost before placing the plant into the growing bag.
The Sun (2015)
Plant in grow bags or large containers in early March and harvest from June.