Weyerhaeuser Announces Yields and Full Tender Offers for Maximum Tender Offers

Federal Way, Washington, USA, 04 June 2007 -- /PRNewswire/ -- Weyerhaeuser Company (NYSE:WY) today announced the applicable reference yields and Full Tender Offer Consideration for each series of Securities to be purchased pursuant to its previously announced Maximum Tender Offers.

The reference yields were determined today at 2 p.m. Eastern time. The Full Tender Offer Consideration for the Securities subject to the Maximum Tender Offers is based on the applicable reference yield plus the fixed spread as set forth in the table below. All payments for securities purchased in the Maximum Offers will include accrued and unpaid interest on the principal amount of securities tendered up to, but not including, the Settlement Date for the Offers, which is currently expected to be 07 June 2007.

Offer for Securities Listed Below: Maximum Tender Offers ($ = USD)

Title of Security Reference Fixed Spread Full Tender Accrued
Yield (basis points) Offer Interest
Consideration per $1,000
per $1,000 Principal
Principal Amount of
Amount of Securities
Securities

7.50% Debentures
due 01 March 2013 4.935% 108 $1070.98 $20.00
7.95% Debentures
due 15 March 2025 5.042% 205 $1085.75 $18.11
7.85% Debentures
due 01 July 2026 5.042% 205 $1078.50 $34.02
5.95% Debentures
due 01 November 2008 4.970% 63 $1004.58 $5.95
6.95% Debentures
due 01 August 2017 4.935% 140 $1045.42 $24.33

The Maximum Tender Offers are scheduled to expire at midnight, Eastern time, on 06 June 2007, unless extended.

The terms and conditions of the Offers, including the conditions to Weyerhaeuser's obligation to accept any securities tendered and to pay the applicable Full Tender Offer Consideration, plus accrued and unpaid interest, are set forth in the Offer to Purchase dated 09 May 2007. Each tender offer is conditioned upon the satisfaction of certain conditions described in the Offer to Purchase.

J.P. Morgan Securities Inc. and Banc of America Securities LLC are the dealer managers for the offers. Morgan Stanley & Co. Inc. and Citigroup Global Markets, Inc. are the co-dealer managers for the offers. Global Bondholder Services Corporation is the Depositary and Information Agent.

Persons with questions regarding the offers should contact J.P. Morgan Securities Inc. toll free at (866) 834-4666 or collect at (212) 834-4077, Attn. Liability Management Group or Banc of America Securities LLC toll free at (866) 475-9886 or collect at (704) 388-4603, Attn. Liability Management Group. Requests for documents should be directed to Global Bondholder Services Corporation toll free at (866) 804-2200 or collect at (212) 430-3774.

Weyerhaeuser Company, one of the world's largest forest products companies, was incorporated in 1900. In 2006, sales were USD 21.9 billion. It has offices or operations in 18 countries, with customers worldwide. Weyerhaeuser is principally engaged in the growing and harvesting of timber; the manufacture, distribution, and sale of forest products; and real estate construction, development, and related activities. Additional information about Weyerhaeuser's businesses, products, and practices is available at http://www.weyerhaeuser.com/.

Web site: http://www.weyerhaeuser.com/