| Rapeseed is also known as canola -- the source for canola oil. It is grown extensively as a crop in the northern prairie states such as the Dakotas. According to USGA, Brassica naper (rape) is listed as a noxious weed in several states and regions. It is a member of the mustard family, which includes a number of 'attractive' noxious weeds. |
Here is a link that might be useful: Brassica naper