A couple of years ago I started reading about medieval Japanese agriculture, what kind of crops were grown, field layout etc. After several hours I thought, 'hang on, this is wargaming, not academia,' and went back to artist reconstructions and TV dramas for inspiration.
I started making this distinctive style of fence (takehogaki) a while back. Inevitably you can get them 3D printed now, but it's a bamboo skewer framework filled with brush bristles.


For more fence styles, and anything else to do with Japanese architecture, I'd recommend
https://www.aisf.or.jp/~jaanus/, which sometimes also gives you the period a particular feature was introduced.