The purpose of this research was to test the medicinal effects of Astragalus Canadensis against the common plant pathogen (Erwinia Carotovora) in infected lettuce. Herbal Medicine has been used for centuries by tribes and Native Americans, and still exists today in most third world countries. In this experiment, the root of Astragalus Canadensis, a Canadian Milk vetch, was tested for its medicinal purposes. The plant pathogen being tested against is also known as "soft rot" because of its rotted appearance once it infects open cuts in plants. Two separate experiments were set up, one using Agar plates and the other using lettuce. Three experimental groups and one control group were used in the first experiment. These experimental groups were E. Carotovora, E. Carotovora + Extract, and E. Carotovora + Extract after day 6. The control had nothing on the agar. These plates were stored in a fridge and on day 30 the Bacterial Growth was recorded by measuring the turbidity of each sample through a spectrophotometer. For the second experiment, 2 experimental groups were used - E. Carotovora and E. Carotovora + Extract - and the control had nothing on it. The pathogen was applied through cuts in the leaves. The rate of infection in the lettuce was calculated by measuring the physical trail of infection with a mm ruler. The data for both experiments were very unexpected. In the first experiment, the bacterial growth was at its peak in the plates with the extract. These results were further justified in the second experiment, where the lettuce plants with the extract showed an extremely significant difference between both the control and the E. Carotovora experimental groups. There was only one out-lier in the 8 trials of experiment 1, and it was included in the data. Some possible sources of error could be the pureness of the Astragalus Canadensis root extract, inaccurate measurements in both the mm ruler and the spectrophotometer, and contamination in plates. However, this data shows that the root extract promotes growth in the pathogen Erwinia Carotovora instead of killing it. Because of the root's reputation for healing wounds, it could be suggested that the extract could promote a faster growth of skin cells or white blood cells. Nevertheless, further research would be needed.