Bugs And Glitches-Cottage Living

I can't seem to find any grown midnight nightly mushrooms to harvest. I've been hanging around the ruins where there is a patch of dirt that is labelled nightly mushrooms for the past two/three in game weeks going back at different times of the day and it's still just a mound of dirt with the option to view and nothing else - really want to grow some nightly mushrooms! I've tried cheating it's growth state as I assumed it was broken but even then it won't let me harvest. Are there some anywhere else in game that I can check out please?
Thank you

Edited: not midnight I mean nightly!