@wavesculptor @Otis_Scops @pvonhellermannn @DarkOptimism millet is cheap if you buy it in bulk as bird food. I’ve also found it in Indian and Korean grocery stores and is less expensive.
Buckwheat is a cool-weather crop and is at risk for climate change. It’s a topic of concern for Japanese farmers since soba is really loved. I tried growing buckwheat in fall/winter/spring here and it bolted too early every season I tried.