| Cover | Jun. 15, 2021 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jun. 15, 2021 |
| Entity File Number | 001-39288 |
| Entity Registrant Name | AppHarvest, Inc. |
| Entity Central Index Key | 0001807707 |
| Entity Tax Identification Number | 82-5042965 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 500 Appalachian Way |
| Entity Address, City or Town | Morehead |
| Entity Address, State or Province | KY |
| Entity Address, Postal Zip Code | 40351 |
| City Area Code | 606 |
| Local Phone Number | 653-6100 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Common Stock [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Common Stock, $0.0001 par value per share |
| Trading Symbol | APPH |
| Security Exchange Name | NASDAQ |
| Warrants Each Whole Warrant Exercisable For One Share Of Common Stock At Exercise Price Of 11. 50 Per Share [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Warrants, each whole warrant exercisable for one share of Common Stock at an exercise price of $11.50 per share |
| Trading Symbol | APPHW |
| Security Exchange Name | NASDAQ |
