<<Disclaimer: Verify this information before applying it to your situation.>>

I have posted about this many times before but can I just assure people that Ireland does grow wheat and barley, and that oats are usually grown in rotation with these.  I have photos of wheat growing in fields of oats (usually around the edge)  - although the reverse is more common because oats always tend to come up the following year - (hence "sowing your wild oats"... .).
The question of how much wheat (or barley) gets into the final crop is very complex and depends partly on variety and time of sowing and harvest.  Containers for different crops are also shared. Producers like McCanns are right to say they can only verify the dedicated milling process and it appears that many coeliacs, including people in Ireland, eat these oats (and other Scottish and English ones) without problems.  Some people will not be able to.  My own research suggests that only Semper in Sweden produce "pure" oats but I have never succeeded in getting any response from them about exporting them
Incidentally, for the really dedicated enthusiast of this debate (or Irish agricultural history) there is EXCELLENT and EXTENSIVE detailed information including maps, graphs etc on the changing pattern of Irish cereal crops over the last 150 years at this rather unlikely source:
http://www.heritagecouncil.ie/publications/cornbunting/ch5.html
Poor old cornbunting!
Charlotte
Oxford, UK

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