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

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2024-12-18</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000737758</issuerCik>
        <issuerName>TORO CO</issuerName>
        <issuerTradingSymbol>TTC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001545408</rptOwnerCik>
            <rptOwnerName>Olson Richard M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>8111 LYNDALE AVENUE SOUTH</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BLOOMINGTON</rptOwnerCity>
            <rptOwnerState>MN</rptOwnerState>
            <rptOwnerZipCode>55420</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman &amp; CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2024-12-18</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>13990</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>81.40</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>27903.461</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2024-12-18</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>6380</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>81.40</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>21523.461</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>17371.348</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>The Toro Company Retirement Plan</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Performance Share Units</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>166709.175</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Represents the payout of a Performance Share Award for the Fiscal 2022 to Fiscal 2024 Performance Period under The Toro Company Amended and Restated 2010 Equity and Incentive Plan, as amended and restated, as approved by the Issuer's Compensation &amp; Human Resources Committee of its Board of Directors on December 10, 2024, and which was conditioned upon and subject to confirmation by the Issuer's Fiscal 2024 financial results that were released on December 18, 2024.</footnote>
        <footnote id="F2">Includes 143.009 net shares acquired by the reporting person since the date of his last report under the dividend reinvestment feature of The Toro Company Retirement Plan less quarterly non-discretionary administrative fees.</footnote>
        <footnote id="F3">Includes 1,374.357 performance share units acquired by the reporting person since the date of his last report under the dividend reinvestment feature of The Toro Company Deferred Compensation Plan for Officers.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Joanna M. Totsky, Attorney-in-Fact</signatureName>
        <signatureDate>2024-12-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
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X0508
4
2024-12-18
0
0000737758
TORO CO
TTC
0001545408
Olson Richard M
8111 LYNDALE AVENUE SOUTH
BLOOMINGTON
MN
55420
1
1
0
0
Chairman & CEO
0
Common Stock
2024-12-18
4
M
0
13990
81.40
A
27903.461
D
Common Stock
2024-12-18
4
F
0
6380
81.40
D
21523.461
D
Common Stock
17371.348
I
The Toro Company Retirement Plan
Performance Share Units
166709.175
D
Represents the payout of a Performance Share Award for the Fiscal 2022 to Fiscal 2024 Performance Period under The Toro Company Amended and Restated 2010 Equity and Incentive Plan, as amended and restated, as approved by the Issuer's Compensation & Human Resources Committee of its Board of Directors on December 10, 2024, and which was conditioned upon and subject to confirmation by the Issuer's Fiscal 2024 financial results that were released on December 18, 2024.
Includes 143.009 net shares acquired by the reporting person since the date of his last report under the dividend reinvestment feature of The Toro Company Retirement Plan less quarterly non-discretionary administrative fees.
Includes 1,374.357 performance share units acquired by the reporting person since the date of his last report under the dividend reinvestment feature of The Toro Company Deferred Compensation Plan for Officers.
/s/ Joanna M. Totsky, Attorney-in-Fact
2024-12-19