While is is true Neelix had several plants grown in the hydroponic bay, they also have collected Leola root on multiple planets. Either they were seeded (which is somewhat likely; Talaxians used to be widespread in the delta quadrant once upon a time) or “leola” just means “edible” and isn’t necessarily a single type of root.
They showed hydroponics. Maybe leola root was the only thing that grew fast enough in hydroponics?
While is is true Neelix had several plants grown in the hydroponic bay, they also have collected Leola root on multiple planets. Either they were seeded (which is somewhat likely; Talaxians used to be widespread in the delta quadrant once upon a time) or “leola” just means “edible” and isn’t necessarily a single type of root.