| Cover | Oct. 28, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Oct. 28, 2021 |
| Entity File Number | 001-39933 |
| Entity Registrant Name | urban-gro, Inc. |
| Entity Central Index Key | 0001706524 |
| Entity Tax Identification Number | 46-5158469 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 1751 Panorama Point |
| Entity Address, Address Line Two | Unit G |
| Entity Address, City or Town | Lafayette |
| Entity Address, State or Province | CO |
| Entity Address, Postal Zip Code | 80026 |
| City Area Code | (720) |
| Local Phone Number | 390-3880 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common stock, par value $0.001 per share |
| Trading Symbol | UGRO |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
