Yellow Hell Stink Seed

It seems as though some farmer is having a bit of a joke - pretty much everywhere my eyes look I see the stuff...

I have written a poen to explain my plight:

Tis yellow in colour and stinky of smell...
You find it in fields and bouquets in hell...
The crop that I speak of is surrounding my pad...
This Oil Seed Rape...drives me stark raving mad...

I hope you like it - it took me quite soom time to find those rhymes

Here is a picture of my plight: