Do you know which variety of potatoes you planted? Here’s some more Tater Info that Pete sent me:
https://www.civicgardencenter.org/blog/determinate-or-indeterminate-potatoes
Interesting. These were baby red potatoes that had begun sprouting in the pantry before I could use them. I didn’t mound them. This was the same kind I grew last year. I hope I’ve left enough room for them. Last year for each potato that was planted, I probably harvested 8 or 9. I always consider these things as an experiment, so we will see what happens. As I recall, I harvested in early September, so maybe 90-100 days later.