Thanks, everyone.
Robin, the Australian irises are growing in Menton; they seem happy. I'm so glad they settled after such a horribly long journey from Australia. Sadly because of lock downs and other covid related restrictions (including a ban on travel by Brits to France) we weren't in France when they were due to bloom - so in short, I don't even know if they bloomed. But they are certainly growing OK. I hope that next spring will be the magic moment
. But for the moment, there's a hosepipe ban in France and since today there's also a hosepipe ban in Oxfordshire.