The objectives of the study were to determine the effect of flexible materials on the germination and growth of native grasses, as well as to determine the effectiveness of the materials to prevent erosion on typical, steep, roadside slopes before the establishment of permanent vegetation. Researchers conducted the vegetation establishment evaluation by hydraulically applying the seed and fertilizer mixture on the plot, installing the erosion control product according to the manufacturer's published literature, and collecting data periodically throughout the growing season. Researchers conducted the erosion control portion of the study by artifically simulating various rainfall events with greatest probability of occurrence during highway construction periods. The report averages the results of each series of simulated design storms for each round of data collection. The resultant of total sediment loss is established by averaging the totals of each round of design storm values. Researchers establish the maximum amount of sediment loss from statistically analyzing the data set for significant difference ranges according to the analysis level.