I drove 50 miles to my John Deere Landscape store to purchase some fertilzer today and I'm not sure if the girl sold me the correct blend. I told her I wanted to purchase some winterizer fertilzer. I couldn't remember the blend off the top of my head so I took her advice. She sold me the 10-02-20 for $25.00 per bag. Will this due or should I take it back for the 32-0-10. I live in the Midwest. I don't plan on applying it until October. Any help would be appreciated.