 Remember, Humigreen is not a fertilizer. It's a unique, biologically correct product that enhances the soil and actually improves it every time you apply it. I picked up my Humigreen, and I had it down within the same hour. Easy to put down. Watered it in for about eight minutes, and I'd say within 24 hours, it literally started to work. You could see it. It was like magic. My lawn has gone from very sad and brown to the most luscious, gorgeous green you've ever seen. Nobody knows like Sam's O's.