The efficacy as an anti-Phytophthora agent was evaluated by the disk diffusion method. KACC 40929 extract exerted broad inhibitory effects against seven Phytophthora species (18–100%), with the strongest inhibition being observed against P. sojae (100%), while KACC 40931 extract exerted inhibitory effects against six Phytophthora species (9–93%), with the strongest inhibition against P. infestans (93% ± 0) and P. drechsleri (79% ± 3). KACC 41717 extract showed anti-Phytophthora activity against three species with 16% (P. meloni) to 87% (P. infestans) inhibition. The remaining extracts showed mild inhibitory effects against Phytophthora species.