According to the United States Department of Agriculture Economic Research Institute, in 2014, California's yield of squash and snap beans decreased by 12.8% and 21.9% due to drought conditions. This study tests how drought stress impacts the nutrient contents and yield of Brassica Oleracea Convar. Capitata Var. Alba (Portuguese Kale). The three treatment means were studied: WW (well watered): watered to 75 $ 0.5% water holding capacity, MS (moderately stressed): watered 50 +0.5% water holding capacity, and FS (fully stressed) which were watered 25 $0.5% water holding capacity. I hypothesized that plants which are MS (moderately stressed) or watered to 50 * 0.5% water holding capacity will have the highest levels of minerals because the amount of water is less, so the plants will have a higher concentration of these minerals. There were four studies within the experiment. In the first study, 35 seeds or 7 pots with 5 seeds of each treatment means were planted to compare the different crop yields, average water content, and iron content. A second study where plants were WW for half of their growth and drought stressed for their other half was planted. 36 more FS plants, 7 more WW plants, and 8 more MS treatments were planted and to provide more material to quantitate for vitamin C. Iron was measured through spectrophotometry while Vitamin C was quantified through titration. In the first study, 97% of the plants germinated from the WW and MS treatments while only 49% of the plants germinated from the FS treatment. The average leaf mass for the WW group was 0.2823 g, 0.2245 g for the MS group, and 0.1858 g for the FS group. The difference between the mass of the WW plants and the mass of the MS plants was insignificant (p=0.142). There is no significant difference between the vitamin C content of WW and MS kale (p=0.900) and MS and FS kale (p=0.067), but there is a significant difference between the WW and FS kale (p=0.018). The iron data suggests that more iron is in the WW than drought stressed Portuguese Kale; however, greater plant mass was needed for more conclusive data. In the second study, there was greater average mass for the group where MS was imposed after WW than the WW control group, but the deviation is insignificant (p=0.561). Moderate drought stress is not harmful to the nutrient contents nor the yield of kale. Also, if the plants are drought stressed after the plants are established, there are less differences from the drought stressed plants and the control group.