I do similar just in a different way. I call what I use in my entire garden “poop dirt”, because it’s dug out of a spot I fed hay a few years ago. It’s black and evidently very rich.Made 2 piles of the cows pooey hay and once the composting heat subsided planted taters in 1 and sweet taters in the other we'll see how it turns out.. We made some of our own sweet tater slips and also bought some off of etsy since they weren't available local..