Weed management strategies on most organic farms are comprised of multiple ecological approaches that strive to minimize weed emergence and interference. One component of most successful systems is the use of cereal and/or legume cover crops. Recently, research in Australia demonstrated that Brassicaceae (the cabbage plant family) cover crops offer a broader array of pest suppression. Additionally, potato producers in the Pacific Northwest have used Brassicaceae cover crops for pest suppression with success, including weeds. Brassicaceae cover crops are known to produce a range of “natural” pest suppressants, capable of diminishing weed, disease, insect, and nematode occurrence in subsequent crops. Objectives of this research were to a) compare in-field growth characteristics and biomass production of fall-planted Brassicaceae cover crops, b) determine fruit yield of bell pepper planted into mechanically terminated Brassicaceae cover crops, and c) characterize the suppression of an endemic weed population in the field in Brassica amended soil.