In the winter, some of our red potatoes in the pantry got old and started sprouting, so we planted them in one of our planters. Last month, we had a harvest. It felt great digging with our bare hands into the soft soil and finding the potatoes, one at a time.
Here is a picture of the planter, after we had reseeded it with carrots this time.
The harvest was amazing. We got at least 30 potatoes, a few of them small, but some of them full sized. Here are some of the larger ones:
Then I noticed that each potato had a mark on it. I can’t figure out how this happened. They were not smashed against the planter, and its walls are smooth. There are no features that would cause these repeatable marks. If you don’t see it, look at this one closeup:
The marks are not the result of some tool that we used to get them out of the ground. We used our bare hands for every one of them.
I looked at red potatoes at the store and found no marks on any of them.
Does anyone have any idea what might be causing these marks?