Potatoes are heavy feeders. Did they ever bloom? They also don't like to have it too dry, or too wet.Well that was super disappointing. Grew potatoes for the first time this year and it was a dismal failure. First lot I put in grew ok for a bit but died off pretty quickly and I got only 1-2 potatoes per plant. I planted a second batch a bit later right next to them. These grew better plants and I left in till plants were totally dead but smaller barely edible size potatoes.
My third try was a few leftover ones that I planted in a container. These plants grew the most healthy and were left the longest but dug them up today and there was just a handful of thumbnail sized potatoes.
Obviously I'm missing something