Natural Potash 0-0-60 Fertilizer 15 Pounds (Garden Naturals Brand)

I needed 15 pounds for a food plot and couldn't find potash anywhere at local farm and garden stores which is weird, but I found it here. Came in bags with the sticker labels off the bags and in the box which kind of made me laugh, but I knew what it was. Other than cost, I have no complaints and it seems like the real stuff and spread easily.

Not soluble at all. Soaked some in water for a week and it still did not dissolve.