How can you tell mustard and rapeseed oil fields apart?

Question

I see huge yellow fields when I fly over the UK. I've been told that they are either rapeseed oils or mustard seed oils. Which one is it? Is one more common than the other? Thanks.

Answer 1

They will probably be almost all rape seed oil plants. Mustard seed plants are grown much less commercially and in areas nearer to the Coleman's mustard factory. At ground level the oil seed rape plant is about 3 feet high with strong almost cabbagy leaves while the mustard is much smaller with softer leaves.