Mosaic prices US$750M notes issue; one series of notes, in principal amount of US$450M, bears 3.75% annual interest rate, matures Nov. 15, 2021, other series, in principal amount of US$300M, bears 4.875% annual interest rate, matures Nov. 15, 2041

PLYMOUTH, MinnesotaF , October 18, 2011 (press release) – The Mosaic Company (NYSE: MOS) announced today that it successfully priced two series of notes in the aggregate principal amount of $750 million. One series of notes bears interest at an annual rate of 3.75%, is in a principal amount of $450 million and matures November 15, 2021. The other series of notes bears interest at an annual rate of 4.875%, is in a principal amount of $300 million and matures November 15, 2041.

Merrill Lynch, Pierce, Fenner & Smith Incorporated; Barclays Capital Inc.; Morgan Stanley & Co. LLC; U.S. Bancorp Investments, Inc. and Wells Fargo Securities, LLC acted as book-running managers of the offering.

The Company has filed a registration statement (including a prospectus) with the SEC for the offering to which this communication relates. Before investing, investors should read the prospectus in that registration statement and other documents the Company has filed with the SEC for more complete information about the Company and this offering. Investors may obtain these documents for free by visiting EDGAR on the SEC web site at www.sec.gov. Alternatively, the Company, any underwriter or any dealer participating in the offering will arrange to send investors the prospectus if requested by contacting:

Merrill Lynch, Pierce, Fenner & Smith Incorporated
100 West 33rd Street, New York, New York 10001
Attention: Prospectus Department
Tel: 800-294-1322.

Morgan Stanley & Co. LLC
180 Varick Street
New York, New York 10014
Attention: Prospectus Department
Tel: 866-718-1649

Broadridge Financial Solutions
1155 Long Island Avenue
Edgewood, NY 11717
Barclaysprospectus@broadridge.com
Tel: 888-603-5847

About The Mosaic Company

The Mosaic Company is one of the world's leading producers and marketers of concentrated phosphate and potash crop nutrients. Mosaic is a single source provider of phosphate and potash fertilizers and feed ingredients for the global agriculture industry.

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