This study aims to suggest a way in order for the plants to adapt to an adequate growing environment by dividing areas according to illumination level and through selecting suitable plants. Based on the result of photoenvironment simulation, the type that showed the most satisfactory illumination level was type Y, and it is followed by the tower type, mixed type and straight type, in that order. The result of plant selection according to illumination level based on light, shade and mixed environment analyzed by photoenvironment shows that as for shade plants, there are 7 species such as, Thalictrum rochebrunianum var. grandisepalum (H.Lév.) Nakai, Lysimachia nummulariaâAureaâ and Liriope platyphylla F.T.Wang & T.Tang. For sun plants, there are 13 species such as Phlox subulata L., Prunella vulgaris var. lilacina Nakai and Mazus miquelii Makino. For mixed environment plants, there are 27 species such as Sedum kamtschaticum Fisch. & Mey., Lysimachia barystachys Bunge and Veronica linariifolia Pall. ex Link. Mixed plants are analyzed to be apt for planting in most spaces of apartment building complexes, therefore, they are analyzed to be suitable, in fact, for the widest spectral areas inside the apartment complex. Keywords: Herbaceous plants, Illumination level of growing environment, Plant selection, Photoenvironment of apartment building