A cover crop of cultivated wild mustard between Easton and St. Michaels. DENNIS FORNEY PHOTOS Dennis Forney The five-petaled flowers in the cover crop field threw me off the scent of canola. A broad, gently rolling field of brilliantly yellow flowers along the road between Easton and St. Michaels caught my eye - and that of thousands more passing motorists - in recent days. May on Delmarva. A cover crop that soon - if not already - will likely be plowed under or killed off to make way for corn or soybeans, the two major crops of the peninsula. My first thought when looking at the field was canola.