Antibacterial action against Staphylococci was examined of 66 kinds of wild plants found on the campus of college of Gumma and the following were found effective: Ginkgo biloba, Deutzia crenata, Hydrangea macrophylla, Rubus trifidus, Spiraea japonica, Campsis chinensis, Weigela hortensis formas pontanea, Cornus officinalis, Buddleja insignis, Tradescantia reflexa, and Torreya nucifera.