By Simteq
United Kingdom 
We have this in our garden but have no clues, the pods contain seeds that look like sweet corn
1 Aug, 2014
Answers
It looks very like an Iris, did it have yellow flowers? Then it's Iris pseudacorus or yellow flag. These definitely have pods with sweetcorn kernel shaped seeds, and normally grows in very wet conditions. But it could be another closely related Iris.
1 Aug, 2014
Could it be 'Iris foetidissima' Stinking iris?
1 Aug, 2014
Yes I'm sure its that one Michaella - I've got it and am having great difficulty digging it up.Time for some bruit force.
1 Aug, 2014
The one i have has long yellow flowers and the seeds in the pods are orange, if that's any help, the suggestions have different flowers.
1 Aug, 2014
If it is an iris you will find the leaves grouped into little fan shapes at the base - not sure |I can see this in your photo though - can you check?
1 Aug, 2014
Just checked my one and no they don't fan at the base.
2 Aug, 2014
Perhaps there are some that don't then but my foetedissima does.
3 Aug, 2014
When it flowers next year I will get pictures and post them up :)
4 Aug, 2014
Best plan.
4 Aug, 2014
Following as this is in the front garden at mine
1 Aug, 2014