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  <xs:element id="smg_RestatedMarketingAgreementMember" abstract="true" name="RestatedMarketingAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_LeverageRatioRestrictedPaymentThreshold" abstract="false" name="LeverageRatioRestrictedPaymentThreshold" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="smg_FifthAmendedAndRestatedSeniorSecuredCreditAgreementMember" abstract="true" name="FifthAmendedAndRestatedSeniorSecuredCreditAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_A4375SeniorNotesMember" abstract="true" name="A4375SeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_GrowingEnvironmentsMember" abstract="true" name="GrowingEnvironmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_ControlsMember" abstract="true" name="ControlsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_U.S.ConsumerMember" abstract="true" name="U.S.ConsumerMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_MarketingAgreementTableTextBlock" abstract="false" name="MarketingAgreementTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="smg_RhizofloraIncMember" abstract="true" name="RhizofloraIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_MinimumTerminationFeePayableThreshold" abstract="false" name="MinimumTerminationFeePayableThreshold" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_MarketingAgreementTermsMinimumEarningsBeforeIncomeTaxes" abstract="false" name="MarketingAgreementTermsMinimumEarningsBeforeIncomeTaxes" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_LeverageRatio" abstract="false" name="LeverageRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="smg_MarketingAgreementAbstract" abstract="true" name="MarketingAgreementAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="smg_GrowingmediaMember" abstract="true" name="GrowingmediaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_MarketingAgreementTable" abstract="true" name="MarketingAgreementTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="smg_AdjustmentsToAdditionalPaidInCapitalPurchaseOfNoncontrollingInterests" abstract="false" name="AdjustmentsToAdditionalPaidInCapitalPurchaseOfNoncontrollingInterests" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_RoundupMarketingAgreementMember" abstract="true" name="RoundupMarketingAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_OtherProductsPrimarilyHardwareAndGrowingEnvironmentsMember" abstract="true" name="OtherProductsPrimarilyHardwareAndGrowingEnvironmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_COVID19PandemicMember" abstract="true" name="COVID19PandemicMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccountsReceivableAndInventory" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccountsReceivableAndInventory" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_DebtInstrumentRestrictedPaymentLimitationYearsTwoAndThereafter" abstract="false" name="DebtInstrumentRestrictedPaymentLimitationYearsTwoAndThereafter" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_DieselFuelMember" abstract="true" name="DieselFuelMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosurePolicyTextBlock" abstract="false" name="OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosurePolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="smg_NutrientsMember" abstract="true" name="NutrientsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_PropertyPlantAndEquipmentImpairmentsMember" abstract="true" name="PropertyPlantAndEquipmentImpairmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_UreaMember" abstract="true" name="UreaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_NetSalesWithAgencyAgreement" abstract="false" name="NetSalesWithAgencyAgreement" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_MarketingAgreementTextBlock" abstract="false" name="MarketingAgreementTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="smg_TrueLibertyBagsMember" abstract="true" name="TrueLibertyBagsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_SMGGrowingMediaIncMember" abstract="true" name="SMGGrowingMediaIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_ImpairmentRestructuringAndOtherRecoveriesChargesContinuingOperations" abstract="false" name="ImpairmentRestructuringAndOtherRecoveriesChargesContinuingOperations" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_OtherIncomeExpenseNetMember" abstract="true" name="OtherIncomeExpenseNetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_RIVCapitalIncMember" abstract="true" name="RIVCapitalIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_RestructuringAndOtherChargesMember" abstract="true" name="RestructuringAndOtherChargesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_NumberOfCompanyNomineesAddedToTheBoard" abstract="false" name="NumberOfCompanyNomineesAddedToTheBoard" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="smg_PaymentsForRestructuringAndOther" abstract="false" name="PaymentsForRestructuringAndOther" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_LuxxLightingIncMember" abstract="true" name="LuxxLightingIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_LongLivedAssetsPolicyTextBlock" abstract="false" name="LongLivedAssetsPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="smg_CommissionIncomeGross" abstract="false" name="CommissionIncomeGross" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_NumberOfCustomers" abstract="false" name="NumberOfCustomers" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="smg_LawnCareMember" abstract="true" name="LawnCareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_DisposalGroupIncludingDiscontinuedOperationContingentConsideration" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationContingentConsideration" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_ThirdRestatedAgreementMember" abstract="true" name="ThirdRestatedAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_MinimumTerminationFeePayableMultipleofAverageProgramEarningsPrior3Years" abstract="false" name="MinimumTerminationFeePayableMultipleofAverageProgramEarningsPrior3Years" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="smg_DeferredStockUnitsMember" abstract="true" name="DeferredStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_InterestRateSwapInstrument5Member" abstract="true" name="InterestRateSwapInstrument5Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_MarketingAgreementDomain" abstract="true" name="MarketingAgreementDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" abstract="false" name="LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_A5250SeniorNotesMember" abstract="true" name="A5250SeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_FinanceLeaseCost" abstract="false" name="FinanceLeaseCost" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_PercentageOfOwnershipAfterConversion" abstract="false" name="PercentageOfOwnershipAfterConversion" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="smg_WriteOffOfContingentConsiderationReceivable" abstract="false" name="WriteOffOfContingentConsiderationReceivable" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_CommissionPayablePercentageofProgramEarnings" abstract="false" name="CommissionPayablePercentageofProgramEarnings" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="smg_GrowingMediaAndMulchMember" abstract="true" name="GrowingMediaAndMulchMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_ContractualCommitmentsFutureMinimumPaymentsDue" abstract="false" name="ContractualCommitmentsFutureMinimumPaymentsDue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_SixthAmendedAndRestatedSeniorSecuredCreditAgreementMember" abstract="true" name="SixthAmendedAndRestatedSeniorSecuredCreditAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_InterestRateSwapInstrument4Member" abstract="true" name="InterestRateSwapInstrument4Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_CostOfSalesImpairmentRestructuringAndOtherCharges" abstract="false" name="CostOfSalesImpairmentRestructuringAndOtherCharges" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_OtherLongtermDebtMember" abstract="true" name="OtherLongtermDebtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_MasterRepurchaseAndFrameworkAgreementsTheAmendmentsMember" abstract="true" name="MasterRepurchaseAndFrameworkAgreementsTheAmendmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_BonniePlantsLLCMember" abstract="true" name="BonniePlantsLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_DisposalGroupIncludingDiscontinuedOperationContingentConsiderationFairValueDisclosure" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationContingentConsiderationFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_InterestRateSwapInstrument1Member" abstract="true" name="InterestRateSwapInstrument1Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_IncreaseDecreaseInOtherNet" abstract="false" name="IncreaseDecreaseInOtherNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesVestedAsAPercentageOfSharesGranted" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesVestedAsAPercentageOfSharesGranted" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="smg_FinanceLeaseLiabilityToBePaidAfterYearFour" abstract="false" name="FinanceLeaseLiabilityToBePaidAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_OtherprimarilygardeningandcontrolsMember" abstract="true" name="OtherprimarilygardeningandcontrolsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_IndoorUrbanAndHydroponicGardeningMember" abstract="true" name="IndoorUrbanAndHydroponicGardeningMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_MinimumTerminationFeePayable" abstract="false" name="MinimumTerminationFeePayable" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_ProgramAgreementTermsMinimumAnnualEBITRequiredToAvoidReductionOfContributionPayment" abstract="false" name="ProgramAgreementTermsMinimumAnnualEBITRequiredToAvoidReductionOfContributionPayment" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_ReceivablesFacilityMember" abstract="true" name="ReceivablesFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_HydroLogicPurificationSystemsIncMember" abstract="true" name="HydroLogicPurificationSystemsIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_MarketingAgreementLineItems" abstract="true" name="MarketingAgreementLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="smg_BrandDecommisioningEventPayable" abstract="false" name="BrandDecommisioningEventPayable" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_InterestRateSwapInstrument3Member" abstract="true" name="InterestRateSwapInstrument3Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_RevenuesReimbursementMarketingAgreement" abstract="false" name="RevenuesReimbursementMarketingAgreement" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_NotYetCommencedMember" abstract="true" name="NotYetCommencedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_InternationalBusinessMember" abstract="true" name="InternationalBusinessMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_AssetsAndLiabilitiesLesseeTableTextBlock" abstract="false" name="AssetsAndLiabilitiesLesseeTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="smg_CostOfSalesImpairmentRestructuringAndOtherChargesMember" abstract="true" name="CostOfSalesImpairmentRestructuringAndOtherChargesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_TermLoanMember" abstract="true" name="TermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_OtherProductsPrimarilyGardeningMember" abstract="true" name="OtherProductsPrimarilyGardeningMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_CommissionIncomeExpenseNet" abstract="false" name="CommissionIncomeExpenseNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_MasterAccountsReceivablePurchaseAgreementMember" abstract="true" name="MasterAccountsReceivablePurchaseAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_RestructuringAndOtherRelatedChargesContinuingOperations" abstract="false" name="RestructuringAndOtherRelatedChargesContinuingOperations" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_DerivativeVolumeTableTextBlock" abstract="false" name="DerivativeVolumeTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="smg_A4500SeniorNotesMember" abstract="true" name="A4500SeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
