About 200 hills planted in rows; 20 inches apart in the rows with the rows 42 inches apart.
Pictures were taken but the SD Card is inop. It has been loaded in-and-out of the card reader so many times that the gold leaf on the contacts flaked away.
The potatoes will fully canopy over by July.
I over-planted potatoes last year. The picture in my head is that I will have slightly less than half my garden planted to "nightshades" in any given year. Then I can flip sides of the garden to rotate crops.
It is not a great system because potato bugs and diseases can easily travel from one side of the garden to the other. I am doing what I can with what I have.