Another fun one. Couldn't figure out a way to mathematically assign the points to farms, but once I got past that manual input the rest flowed
Thinking of the hedges as line segments, made individual segments using Multi Row Formula. Interestingly, the Unique tool treats segments that start at point a and end at point b as unique from those that start at point b and end at point a. So, created a name for the hedges that contained the start and end points and "uniqued" on that field.
I spent waaaay too long trying and failing to implement concave hull and edge-detection algorithms in Alteryx to try to dynamically build the individual fields (reminded me of some of the 2019 Advent of Code problems!) In the end, like everyone else, I ended up building a manual lookup table.