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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 27MKLn+juzWSIJh+TrQqdg==

<SEC-DOCUMENT>0001223203-08-000111.txt : 20080624
<SEC-HEADER>0001223203-08-000111.hdr.sgml : 20080624
<ACCEPTANCE-DATETIME>20080624173233
ACCESSION NUMBER:		0001223203-08-000111
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080619
FILED AS OF DATE:		20080624
DATE AS OF CHANGE:		20080624

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WEYERHAEUSER CO
		CENTRAL INDEX KEY:			0000106535
		STANDARD INDUSTRIAL CLASSIFICATION:	LUMBER & WOOD PRODUCTS (NO FURNITURE) [2400]
		IRS NUMBER:				910470860
		STATE OF INCORPORATION:			WA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		33663 WEYERHAEUSER WAY SOUTH
		CITY:			FEDERAL WAY
		STATE:			WA
		ZIP:			98003
		BUSINESS PHONE:		2539242345

	MAIL ADDRESS:	
		STREET 1:		33663 WEYERHAEUSER WAY SOUTH
		CITY:			FEDERAL WAY
		STATE:			WA
		ZIP:			98003

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Fulton Daniel S
		CENTRAL INDEX KEY:			0001313859

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-04825
		FILM NUMBER:		08915090

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		253-924-7610

	MAIL ADDRESS:	
		STREET 1:		P O BOX 9777
		CITY:			FEDERAL WAY
		STATE:			WA
		ZIP:			98371
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2008-06-19</periodOfReport>

    <dateOfOriginalSubmission>2008-06-19</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000106535</issuerCik>
        <issuerName>WEYERHAEUSER CO</issuerName>
        <issuerTradingSymbol>WY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001313859</rptOwnerCik>
            <rptOwnerName>Fulton Daniel S</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>P O BOX 9777</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>FEDERAL WAY</rptOwnerCity>
            <rptOwnerState>WA</rptOwnerState>
            <rptOwnerZipCode>98371</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President &amp; CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>55.4</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2008-06-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>130000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2009-06-20</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2018-06-19</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>common</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>130000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>130000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The option vests in 25% increments beginning June 20, 2009.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/Vicki A. Merrick, Attorney-in-fact</signatureName>
        <signatureDate>2008-06-24</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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