Horizon Organic Holding (HCOW) 10-Q 2002 Q3 Quarterly report

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EXHIBIT 99.1

CERTIFICATION
PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
SUBSECTIONS (a) AND (b) OF SECTION 1350, CHAPTER 63 OF TITLE 18, UNITED STATES CODE

        Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of Title 18, United States Code), each of the undersigned officers of Horizon Organic Holding Corporation, a Delaware corporation (the "Company"), does hereby certify with respect to the Quarterly Report of the Company on Form 10-Q for the quarter ended September 30, 2002 as filed with the Securities and Exchange Commission (the "10-Q Report") that:

(1)

the 10-Q Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and



(2)

the information contained in the 10-Q Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated:	November 14, 2002
	/s/  CHARLES F. MARCY      Charles F. Marcy President and Chief Executive Officer of Horizon Organic Holding Corporation
Dated:	November 14, 2002
	/s/  THOMAS P. BRIGGS      Thomas P. Briggs Senior Vice President, Finance and Administration, Chief Financial Officer, and Secretary of Horizon Organic Holding Corporation

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EXHIBIT 99.1