The purpose of this study is to increase effects of horticultural therapy for elder for utilizing space in facitilies for elders. This study was conducted during June, 2002 through April, 2004 for the investigation within institutions for the elderly. The institutions for this study were 47 daycare center and short/long term institutions for the elderly in 6 metropolitan cities. The content of this study was concentrated on the utilization of space facilities for the passive and active application of space for horticultural therapy. For the passive application of environment, flower beds, plant distribution state, statues that within rest areas, nametag of plant were investigated. Ninety-six % of the daycare institutions and 100% of the short/long term institutions had only a few hidden flower beds combined with parking facilities and sidewalks, i.e. there was no therapeutic environment for the passive application of horticultural therapy. In distribution of plant, most of the plant within in the meager space were pines, boxwoods, and rhododendrons. In rest areas, About 4% of the facilities had stateus but none had nametag of plants. To investigate the active therapeutic environment of the facilities, round paths, raisedbeds, the accessibility of preparation gardens, rooftops, and balconies were investigated. Through this investigation it was found that 19% of institutions possesed round paths, none had raisedbed, and 27% of institutions had preparation garden. By the results of this investigation, It was found that the space usage of current facilities are very low, in terms of both efficiency and effectiveness.