I have a biodynamic astrological calendar which I follow it tells me when is best to sow seeds, plant plants and harvest crops. It’s generally a two week cycle as it follows the moon.
I use to garden organically then my sister introduced me to growing in this way, we both did experiments with different crops and discovered that we got more positive results from growing in this way.
I removed the onions contact with the soil just the other day as that was the optimum time to sever their contact.
There are other things that are biodynamic which I’ve yet to really try like mixing herbal solutions to feed the soil.