Does q of mandrakes depends on the node only?

[Flyrella]

Like for other foragebles or there is something else?
Also, could spirited mandrakes just run around and then settle in random places chainging their q somehow?
I found this in the middle of a wheat field

[Granger]

Should be node quality capped by survival, unless there was a stealth change.

[Tammer]

I thought they had to do with some of the stats of the hearthling buried in the nearby grave, but I can't find where I would have read that.

[azrid]

tied to skull quality

[Granger]

I thought they had to do with some of the stats of the hearthling buried in the nearby grave, but I can't find where I would have read that.

Yes, there was something about occupied Graves influencing their quality.