Cc @MisterGuy and @Drew51
Thanks for this thread! I’ve tried growing potatoes at the previous (rental) we lived in and it was mostly in grow bags with very random results. I don’t think I was thinking very hard about it and putting in very good quality potting mix.
Based on this, I’ve taken some old soil from 2 containers I just emptied out and mixed it with a potting mix that has coir, DE and some bark (iirc) with no fertilizer or compost mixed in. I’ve put 5 potatoes in a 25 gal black Vivosun grow bag, with the mix above filled in about 1/3rd of the way, and the bag rolled down. On the top I sprinkled some alpaca wool pellets I’m trialing this year.
In this first bag, I’ve put in Prarie Blush potatoes, which have produced decently to well for me here in the past.
I plan to do at least 2 more bags.
And btw these are in a location that gets direct morning Sun for about 5-6hrs a day.