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        </BusinessName>
        <TitleTxt>Board Member</TitleTxt>
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        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Charles V Greener</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Board Member</TitleTxt>
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        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Diane vS Levy</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Dorothy H Gardner</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Board Member</TitleTxt>
        <AverageHoursPerWeekRt>2.0</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Ellis M Goodman</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Angela Korompilas</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Anne Loucks</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Greg Smith</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Jane Irwin</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Jane S Park</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Janet Meakin Poor</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Jennifer M Kasten</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>John C Robak</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>John H Buehler</BusinessNameLine1Txt>
        </BusinessName>
        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>John K Greene</BusinessNameLine1Txt>
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        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Joseph P Gromacki</BusinessNameLine1Txt>
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        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Gregory K Jones</BusinessNameLine1Txt>
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        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Harrison I Steans</BusinessNameLine1Txt>
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        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>James W DeYoung</BusinessNameLine1Txt>
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        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Laura M Linger</BusinessNameLine1Txt>
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        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Michael J McMurray</BusinessNameLine1Txt>
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        <BusinessName>
          <BusinessNameLine1Txt>Nancy Gidwitz</BusinessNameLine1Txt>
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        <BusinessName>
          <BusinessNameLine1Txt>Neville F Bryan</BusinessNameLine1Txt>
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        <BusinessName>
          <BusinessNameLine1Txt>Pam F Szokol</BusinessNameLine1Txt>
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        <BusinessName>
          <BusinessNameLine1Txt>Robert D Hevey Jr</BusinessNameLine1Txt>
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        <BusinessName>
          <BusinessNameLine1Txt>Robert E Shaw</BusinessNameLine1Txt>
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        <BusinessName>
          <BusinessNameLine1Txt>Robin T Colburn</BusinessNameLine1Txt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Ryan S Ruskin</BusinessNameLine1Txt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Sharon Brady</BusinessNameLine1Txt>
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        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Steve Fradkin</BusinessNameLine1Txt>
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        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Steven J Gavin</BusinessNameLine1Txt>
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        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Susan Keller Canmann</BusinessNameLine1Txt>
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        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Todd Kaplan</BusinessNameLine1Txt>
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        <TitleTxt>Board Member</TitleTxt>
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        <BusinessName>
          <BusinessNameLine1Txt>Tom Skilling</BusinessNameLine1Txt>
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        <BusinessName>
          <BusinessNameLine1Txt>William E Moeller</BusinessNameLine1Txt>
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        <BusinessName>
          <BusinessNameLine1Txt>William J Hagenah</BusinessNameLine1Txt>
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        <BusinessName>
          <BusinessNameLine1Txt>M James Leider</BusinessNameLine1Txt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Maria Smithburg</BusinessNameLine1Txt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Michael J Busch</BusinessNameLine1Txt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Gillian Growdon</BusinessNameLine1Txt>
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        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Christopher Merrill</BusinessNameLine1Txt>
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        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>George A Peinado</BusinessNameLine1Txt>
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        <TitleTxt>Board Member</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Lois L Morrison</BusinessNameLine1Txt>
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        <TitleTxt>Board Member</TitleTxt>
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        <BusinessName>
          <BusinessNameLine1Txt>Jonathan S Holloway</BusinessNameLine1Txt>
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        <BusinessName>
          <BusinessNameLine1Txt>Heidi B Capozzi</BusinessNameLine1Txt>
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        <BusinessName>
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        <BusinessName>
          <BusinessNameLine1Txt>Andrew J Warzecha</BusinessNameLine1Txt>
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        <BusinessName>
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        <BusinessName>
          <BusinessNameLine1Txt>Jean M Franczyk</BusinessNameLine1Txt>
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        <BusinessName>
          <BusinessNameLine1Txt>Gregory Mueller</BusinessNameLine1Txt>
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        <BusinessName>
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        <BusinessName>
          <BusinessNameLine1Txt>Kris Jarantoski</BusinessNameLine1Txt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Jennifer Schwarz Ballard</BusinessNameLine1Txt>
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      <Form990PartVIISectionAGrp>
        <BusinessName>
          <BusinessNameLine1Txt>Thomas J Nissly</BusinessNameLine1Txt>
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        <BusinessName>
          <BusinessNameLine1Txt>James F Boudreau</BusinessNameLine1Txt>
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        <BusinessName>
          <BusinessNameLine1Txt>Harriet Resnick</BusinessNameLine1Txt>
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        <BusinessName>
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      <ThirdPartiesUsedInd>false</ThirdPartiesUsedInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule M, Part I Explanations of reporting method for number of contributions</FormAndLineReferenceDesc>
        <ExplanationTxt>Securities - Publicly traded - NUMBER OF CONTRIBUTIONS Other - MARKET VALUE OF DONATED BEVERAGES, PLANTS, TREE SERVICES, AIRLINE TRAVEL, HOTEL, LEGAL NUMBER OF CONTRIBUTIONS Books and publications - NUMBER OF CONTRIBUTIONS</ExplanationTxt>
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    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="IRS990ScheduleO" softwareId="17005876" softwareVersionNum="2017v2.2">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, Line 4d Description of other program services</FormAndLineReferenceDesc>
        <ExplanationTxt>(Expenses $ 5,211,057 including grants of $)(Revenue $ 2,544,476) VISITOR SERVICES: 1,111,000 PEOPLE VISITED THE GARDEN IN 2017, FROM THROUGHOUT THE CHICAGO AREA, THE MIDWEST, THE NATION AND THE WORLD. THE GARDEN FEATURES A WIDE VARIETY OF INDOOR AND OUTDOOR EVENTS, ACTIVITIES, PROGRAMMING AND EXHIBITIONS. THE GARDEN ALSO HOSTS DOZENS OF FLOWER SHOWS AND SALES, AND IS THE SITE OF EDUCATIONAL PROGRAMMING FOR VISITORS OF ALL AGES AND WEEKEND FAMILY CLASSES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, Line 4d Description of other program services</FormAndLineReferenceDesc>
        <ExplanationTxt>(Expenses $ 1,626,313 including grants of $) MEMBERSHIP REVENUE</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, Line 4d Description of other program services</FormAndLineReferenceDesc>
        <ExplanationTxt>(Expenses $ 166,915 including grants of $)(Revenue $ 439,766) OTHER INCOME, BUSINESS CODE: 900099</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, Line 4d Description of other program services</FormAndLineReferenceDesc>
        <ExplanationTxt>(Expenses $ including grants of $)(Revenue $ 6,710,158) GOVERNMENT GRANTS</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 3 Delegation of management duties</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CHICAGO HORTICULTURAL SOCIETY CONTRACTS WITH SODEXO, INC. TO MANAGE AND OPERATE FOOD SERVICES AND EVENT NETWORK TO MANAGE AND OPERATE RETAIL SERVICES. THESE MANAGEMENT CONTRACTS REPRESENT A MINOR SHARE OF THE ORGANIZATION'S MANAGEMENT RESPONSIBILITIES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 11b Review of form 990 by governing body</FormAndLineReferenceDesc>
        <ExplanationTxt>THE COMPLETED FORM 990, INCLUDING SCHEDULES, WAS DISTRIBUTED TO THE MEMBERS OF THE AUDIT COMMITTEE OF THE BOARD OF DIRECTORS FOR REVIEW. EACH COMMITTEE MEMBER WAS REQUESTED TO REVIEW FORM 990, INCLUDING SCHEDULES, AND ALLOWED THE OPPORTUNITY TO ASK QUESTIONS, OFFER EDITS, AND PROVIDE APPROVAL. SUBSEQUENT TO THE AUDIT COMMITTEE'S APPROVAL, THE FINAL FORM 990, INCLUDING SCHEDULES, WAS MADE AVAILABLE TO THE FULL BOARD OF DIRECTORS FOR REVIEW BEFORE FILING.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 12c Conflict of interest policy</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CHICAGO HORTICULTURAL SOCIETY HAS A CONFLICT OF INTEREST POLICY. EACH BOARD MEMBER MUST FILL OUT AN ANNUAL DECLARATION STATING THAT THEY HAD NO CONFLICTS OR IDENTIFYING THE NATURE OF THEIR INTERESTED PARTY TRANSACTION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 15a Process to establish compensation of top management official</FormAndLineReferenceDesc>
        <ExplanationTxt>THE COMPENSATION COMMITTEE (THE COMMITTEE) OF THE BOARD OF DIRECTORS IS RESPONSIBLE FOR THE ANNUAL REVIEW OF THE COMPENSATION OF THE OFFICERS OF THE ORGANIZATION. ALL MEMBERS OF THE COMMITTEE ARE INDEPENDENT IN DETERMINING THE COMPENSATION OF THE PRESIDENT/CEO. THE COMMITTEE EVALUATES THE CEO'S PERFORMANCE AGAINST PREVIOUSLY AGREED UPON CRITERIA, CONSIDERS COMPARABLE MARKET DATA, THEN DEBATES AND DOCUMENTS ITS RECOMMENDATION OF REASONABLE COMPENSATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 15b Process to establish compensation of other employees</FormAndLineReferenceDesc>
        <ExplanationTxt>THE COMPENSATION COMMITTEE (THE COMMITTEE) OF THE BOARD OF DIRECTORS IS RESPONSIBLE FOR THE ANNUAL REVIEW OF THE COMPENSATION OF THE OFFICERS OF THE ORGANIZATION. ALL MEMBERS OF THE COMMITTEE ARE INDEPENDENT IN DETERMINING THE COMPENSATION OF THE OFFICERS OF THE ORGANIZATION. THE COMMITTEE EVALUATES THE OFFICERS OF THE ORGANIZATION PERFORMANCE AGAINST PREVIOUSLY AGREED UPON CRITERIA, CONSIDERS COMPARABLE MARKET DATA, THEN DEBATES AND DOCUMENTS ITS RECOMMENDATION OF REASONABLE COMPENSATION. IN DETERMINING THE COMPENSATION OF OTHER OFFICERS, THE SAME PROCEDURES ARE PERFORMED, HOWEVER, THE COMMITTEE CONSIDERS THE CEO'S EVALUATION OF THE STAFF'S PERFORMANCE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 19 Required documents available to the public</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CHICAGO HORTICULTURAL SOCIETY PRODUCES AN ANNUAL REPORT AND SUMMARIZED FINANCIAL REPORTS WHICH ARE AVAILABLE ON ITS WEBSITE. THE ORGANIZATION'S GOVERNING DOCUMENTS AND CONFLICT OF INTEREST POLICY ARE AVAILABLE ON ITS WEBSITE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, Line 9 Other changes in net assets or fund balances</FormAndLineReferenceDesc>
        <ExplanationTxt>CHANGE IN FAIR VALUE OF INTEREST RATE SWAPS - 990339; NET INCOME FROM CONTROLLED AFFILIATED (FEIN: 36-3621163) REORTED ON SEPARATE FORM 990 - 62083;</ExplanationTxt>
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          <BusinessNameLine1Txt>CHICAGOLAND GROWS</BusinessNameLine1Txt>
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          <AddressLine1Txt>1000 LAKE COOK ROAD</AddressLine1Txt>
          <CityNm>GLENCOE</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>60022</ZIPCd>
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        <EIN>363621163</EIN>
        <PrimaryActivitiesTxt>PLANT INTRODUCTION</PrimaryActivitiesTxt>
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        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
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          <BusinessNameLine1Txt>NA</BusinessNameLine1Txt>
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      <ReceiptOfIntAnntsRntsRyltsInd>false</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>false</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>false</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>false</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>false</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>false</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>false</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>false</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>false</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>false</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>false</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>false</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>false</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>true</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>true</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>false</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>false</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>false</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>false</TransferFromOtherOrgInd>
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