Over the last few thousand years, farmers have bred Brassica Oleracea into six "cultivars" that eventually became many of the vegetables we eat: Brassica is also known as the wild mustard plant.

Apart from problems with competition, hedge mustard can also be a concern in crops such as peas because its tough stem material can clog up harvesters. It is evidently used in Europe in ... smaller ...

Skye Gould/Business Insider Brassica is also known as the wild mustard plant. "The wild plant is a weedy little herb that prefers to grow on limestone outcroppings all around the coastal ...