The Dutch flower council survey looked at the london office of one of the world's largest auditing companies.
Putting £10,000 of plants on one floor led to £5m improvements in productivity across the floorplate.
University of Exeter worked with uniersity of Gronigen on the study said Exeter's Dr Craig Knight.
"The ability to identify yourself in a space or see something of yourself is the key to working,' he told the eFig conference. "If staff can choose how to enrich a space and realise their identity, they feel healthier, happier and have more job satisfaction and better well-being."
Ambius' Kenneth Freeman told the conference staff should be able to choose and position plants randomly rather than have a rigid layout imposed on them y architects or bosses.
"This wlll ensure staff respect the plants more than the filing cabinets."