No obvious rhizomes?

[devonstew]

Hiya,

Finally got round to digging a few holes here and there, and I can’t obviously see the characteristic thick white rhizomes, creeping root things! I think they must be obvious having seen ploughed land and the rhizomes sticking up all over the place?
Therefore what do people think – can I assume no couch, that the grass there might be rye or something like that?

Thanks again….