Plasma, the fourth state of matter, is created by introducing a gas - in this case, helium - to an electric field. This field ionizes the helium atoms, which in turn ionize other molecules, creating a wide variety of highly reactive species. Previous work at Edmonds Community College demonstrated the efficacy of an atmospheric pressure plasma jet (APPJ) in killing endospores of Bacillus atrophaeus for the purpose of spacecraft sterilization for NASA (Bernard et al., 2017). With increasing rates of antibiotic resistance, there is interest in using an APPJ in healthcare settings to eliminate harmful pathogens and therefore promote wound healing. However, given its destruction of endospores, it is unclear if the APPJ would damage living tissue. The purpose of this research was to analyze the effect of an APPJ on multicellular eukaryotic organisms. The impact of different exposure times of the APPJ upon both germinated and ungerminated Zinnia elegans seeds, and the effects on plant growth, was studied. The optimal exposure time for germinated seeds was between one and two minutes, while treatments greater than 2 minutes may increase germination rate.