Brassicas and Mustards Type: Annual (usually winter or spring; summer use possible) Roles: Prevent erosion, suppress weeds and soilborne pests, alleviate soil compaction and scavenge nutrients Mix with: Other brassicas or mustards, small grains or crimson clover Species: Brassica napus, Brassica rapa, Brassica juncea, Brassica hirta, Raphanus sativus, Sinapsis alba See charts for ranking and … Continue reading Brassicas and Mustards