<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2012-11-07</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000878726</issuerCik>
        <issuerName>TUESDAY MORNING CORP/DE</issuerName>
        <issuerTradingSymbol>TUES</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001349005</rptOwnerCik>
            <rptOwnerName>Becker Steven R</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>500 CRESCENT COURT</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 230</rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75201</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2012-11-07</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>8300</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>17186</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3396893</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes 4 and 5.</value>
                    <footnoteId id="F4"/>
                    <footnoteId id="F5"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">The 8,300 shares represent shares of restricted stock, all of which vest on November 4, 2013.</footnote>
        <footnote id="F2">Restricted Shares granted pursuant to the Tuesday Morning Corporation (the &quot;Issuer&quot;) 2004 Long-Term Equity Incentive Plan.</footnote>
        <footnote id="F3">Represents shares of restricted stock, 8,866 of which have vested and all of which were granted pursuant to the Tuesday Morning Corporation 2004 Long-Term Equity Incentive Plan.</footnote>
        <footnote id="F4">Represents shares of common stock (&quot;Common Stock&quot;), par value $0.01 per share, of the Issuer directly beneficially owned by Becker Drapkin Partners (QP), L.P. (&quot;Becker Drapkin QP&quot;) (1,379,894 shares), Becker Drapkin Partners, L.P. (&quot;Becker Drapkin, L.P.&quot;) (191,517 shares), BD Partners V, L.P. (&quot;BD Partners V&quot;) (808,221 shares) and BD Management on behalf of a managed account (the &quot;Managed Account&quot;) (1,017,261 shares).  (continued in Footnote 5).</footnote>
        <footnote id="F5">Mr. Becker may be deemed to beneficially own such shares of Common Stock as he is a co-managing member of BC Advisors, LLC, which is the general partner of BD Management (of which Mr. Becker is a limited partner), and BD Management is the general partner of, and investment manager for, each of Becker Drapkin QP, Becker Drapkin, L.P. and BD Partners V.  BD Management is also the investment manager for the Managed Account.  Mr. Becker disclaims beneficial ownership in such shares of Common Stock except to the extent of his pecuniary interest therein.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Andrew S. McLelland, attorney-in-fact</signatureName>
        <signatureDate>2012-11-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
