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  <xs:element id="smg_LineOfCreditFacilityAdditionalCommittedCredit" abstract="false" name="LineOfCreditFacilityAdditionalCommittedCredit" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_FinancingReceivableTerm" abstract="false" name="FinancingReceivableTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <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_SaleLeasebackTransactionTerm" abstract="false" name="SaleLeasebackTransactionTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="smg_OtherPostretirementBenefitPlansGrossPaymentMember" abstract="true" name="OtherPostretirementBenefitPlansGrossPaymentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_NumberofDefinedFrozenBenefitPensionPlansAssociatedWithFormerInternationalBusinesses" abstract="false" name="NumberofDefinedFrozenBenefitPensionPlansAssociatedWithFormerInternationalBusinesses" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="smg_AccountsReceivableReceivablesPledgedAsCollateral" abstract="false" name="AccountsReceivableReceivablesPledgedAsCollateral" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_MiracleGroMember" abstract="true" name="MiracleGroMember" 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_VotingRightsNumberOfMembersThatCanBeNominated" abstract="false" name="VotingRightsNumberOfMembersThatCanBeNominated" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="smg_KeyEmployeesMember" abstract="true" name="KeyEmployeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_LeverageRatio" abstract="false" name="LeverageRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="smg_AmendedOriginalMarketingAgreementMember" abstract="true" name="AmendedOriginalMarketingAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_TheHawthorneColectiveMember" abstract="true" name="TheHawthorneColectiveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_FiniteLivedIntangibleAssetImpairmentMember" abstract="true" name="FiniteLivedIntangibleAssetImpairmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_DebtInstrumentInterestRateIncreaseDecreaseBasisPoints" abstract="false" name="DebtInstrumentInterestRateIncreaseDecreaseBasisPoints" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="smg_NetPeriodicBenefitCost" abstract="false" name="NetPeriodicBenefitCost" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_DisposalGroupIncludingDiscontinuedOperationContingentConsiderationArrangementsAsset" abstract="false" name="DisposalGroupIncludingDiscontinuedOperationContingentConsiderationArrangementsAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_StateNetOperatingLossesCarryforwardPeriodMaximum" abstract="false" name="StateNetOperatingLossesCarryforwardPeriodMaximum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <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_StateNetOperatingLossesCarryforwardPeriodMinimum" abstract="false" name="StateNetOperatingLossesCarryforwardPeriodMinimum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="smg_RestructuringAndOtherRelatedChargesDiscontinuedOperations" abstract="false" name="RestructuringAndOtherRelatedChargesDiscontinuedOperations" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_RestrictedStockUnitsPerformanceSharesAndStockOptionsMember" abstract="true" name="RestrictedStockUnitsPerformanceSharesAndStockOptionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_SignificantAccountingPoliciesLineItems" abstract="true" name="SignificantAccountingPoliciesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="smg_NatureOfOperationsPolicyPolicyTextBlock" abstract="false" name="NatureOfOperationsPolicyPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="smg_RestructuringSettlementAndImpairmentProvisionsMember" abstract="true" name="RestructuringSettlementAndImpairmentProvisionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_InterestRateSwapInstrument6Member" abstract="true" name="InterestRateSwapInstrument6Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_DebtInstrumentShareOwnershipAfterConversion" abstract="false" name="DebtInstrumentShareOwnershipAfterConversion" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <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_RepaymentsOfSeniorDebtRedemptionPremium" abstract="false" name="RepaymentsOfSeniorDebtRedemptionPremium" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRestrictedStockUnitsTable" abstract="true" name="ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRestrictedStockUnitsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="smg_InterestRateSwapInstrument7Member" abstract="true" name="InterestRateSwapInstrument7Member" 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_FinancingReceivableAnnualInterestRateIncrease" abstract="false" name="FinancingReceivableAnnualInterestRateIncrease" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="smg_LineOfCreditFacilityLettersOfCredit" abstract="false" name="LineOfCreditFacilityLettersOfCredit" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_DetailOfFinancialStatementsDisclosureTextBlock" abstract="false" name="DetailOfFinancialStatementsDisclosureTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="smg_ConditionForOwnershipOfVotingStockPercentage" abstract="false" name="ConditionForOwnershipOfVotingStockPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <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_InterestRateSwapInstrument4Member" abstract="true" name="InterestRateSwapInstrument4Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_PurchaseAgreementTermsConsiderationToBePaid" abstract="false" name="PurchaseAgreementTermsConsiderationToBePaid" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_ScheduleOfCostsRelatedToPurchaseObligationsLineItems" abstract="true" name="ScheduleOfCostsRelatedToPurchaseObligationsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="smg_DefinedBenefitPlanFairValueOfPlanAssetsContributionsByPlanParticipants" abstract="false" name="DefinedBenefitPlanFairValueOfPlanAssetsContributionsByPlanParticipants" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_SecuredTermLoanMember" abstract="true" name="SecuredTermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_SeniorNotes5250PercentMember" abstract="true" name="SeniorNotes5250PercentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_SignificantAccountingPoliciesTable" abstract="true" name="SignificantAccountingPoliciesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <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_DebtMaturityPeriod" abstract="false" name="DebtMaturityPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="smg_OwnershipOfOutstandingCommonShares1" abstract="false" name="OwnershipOfOutstandingCommonShares1" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="smg_ScheduleOfAllocationOfPlanAssetsAndExpectedFutureBenefitPaymentsTableTextBlock" abstract="false" name="ScheduleOfAllocationOfPlanAssetsAndExpectedFutureBenefitPaymentsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <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_ConvertibleDebtInvestments" abstract="false" name="ConvertibleDebtInvestments" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_PurchaseAgreementTermsValueOfBrandExtensionAgreementIntangibleAsset" abstract="false" name="PurchaseAgreementTermsValueOfBrandExtensionAgreementIntangibleAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_BonniePlantsLLCMember" abstract="true" name="BonniePlantsLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_ProductRegistrationCosts" abstract="false" name="ProductRegistrationCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_ExercisePriceRangeTwoMember" abstract="true" name="ExercisePriceRangeTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_AccruedInterest" abstract="false" name="AccruedInterest" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_PaymentstoAcquirePropertyPlantandEquipmentExcludingDiscontinuedOperations" abstract="false" name="PaymentstoAcquirePropertyPlantandEquipmentExcludingDiscontinuedOperations" 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_NumberOfCompanyNomineesAddedToTheBoard" abstract="false" name="NumberOfCompanyNomineesAddedToTheBoard" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="smg_NumberOfDefinedBenefitPlansForCertainUSAssociates" abstract="false" name="NumberOfDefinedBenefitPlansForCertainUSAssociates" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="smg_DerivativeInstrumentsAndHedgingActivitiesDisclosureTable" abstract="true" name="DerivativeInstrumentsAndHedgingActivitiesDisclosureTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="smg_DisclosureOfConsolidatingBalanceSheetTableTextBlock" abstract="false" name="DisclosureOfConsolidatingBalanceSheetTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <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_A4000SeniorNotesMember" abstract="true" name="A4000SeniorNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_CompanySelfInsurancePerOccurrencePerIndividual" abstract="false" name="CompanySelfInsurancePerOccurrencePerIndividual" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_HomeDepotMember" abstract="true" name="HomeDepotMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="smg_NoncontrollingInterestAdjustmentDueToOwnershipChange" abstract="false" name="NoncontrollingInterestAdjustmentDueToOwnershipChange" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfShareBasedAwardsAndVestingOfRestrictedStock" abstract="false" name="EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfShareBasedAwardsAndVestingOfRestrictedStock" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_EffectiveTaxRateReconciliationDiscreteItemIncreaseDecreaseInBasisPoints" abstract="false" name="EffectiveTaxRateReconciliationDiscreteItemIncreaseDecreaseInBasisPoints" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <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_AdditionalSharesAuthorizedForRepurchaseValue" abstract="false" name="AdditionalSharesAuthorizedForRepurchaseValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="smg_DefinedBenefitPlanByBenefitPlanCategoriesDomain" abstract="true" name="DefinedBenefitPlanByBenefitPlanCategoriesDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
