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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2018-08-31</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001706524</issuerCik>
        <issuerName>urban-gro, Inc.</issuerName>
        <issuerTradingSymbol>UGRO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001076463</rptOwnerCik>
            <rptOwnerName>WILKS LEWIS</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1751 PANORAMA POINT</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE G</rptOwnerStreet2>
            <rptOwnerCity>LAFAYETTE</rptOwnerCity>
            <rptOwnerState>CO</rptOwnerState>
            <rptOwnerZipCode>80026</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Common Stock Options</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>7.2</value>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2019-08-31</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2021-08-31</value>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>16667</value>
                    <footnoteId id="F1"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Reporting Person was granted an option by the Issuer to acquire up to 100,000 shares (16,667 shares after giving effect to the 1-for-6 reverse stock split effected December 31, 2020 (the &quot;Reverse Stock Split&quot;)) of the Common Stock of the Issuer, one-third exercisable on the anniversary date of the Reporting Person's appointment as a Director of the Issuer (or 33,333 shares (5,556 shares after giving effect to the Reverse Stock Split) on August 31, 2019, 33,333 shares (5,556 shares after giving effect to the Reverse Stock Split) on August 31, 2020 and 33,334 shares (5,556 shares after giving effect to the Reverse Stock Split) on August 31, 2021), at an exercise price of $1.20 per share ($7.20 per share after giving effect to the Reverse Stock Split), provided Reporting Person remains and is a Director of the Issuer on each such anniversary date.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Lewis Wilks, by Nelson Mullins Riley &amp; Scarborough LLP with Power of Attorney</signatureName>
        <signatureDate>2022-05-31</signatureDate>
    </ownerSignature>
</ownershipDocument>
