Honestly, the whole native farming never worked for me, so I just ordered my natives to do mining, logging, and livestock + harvest.
I'm not sure if I'm doing something wrong with the farming, or it's a buggy mechanics. Regardless, They're not a good source of food anyway, and more of a "tool" to obtain items for craft/recipes. I recommend to just micro manage all the farming by yourself, some of them are really useful like corn and soybean.
Another user told me the best way to get food is through bear traps. I placed like 10 or so, and I got plenty of pigs and deers daily, and I never had to worry about food troubles anymore, assuming your reason for farming is food. Else, if you're planning on using them for crafting, then micro managing is advisable.