Kentucky Hemp: Greenhouse Sanitation – Cleaning Up Today Keeps Disease Away

    Hemp plants growing in a high tunnel greenhouse. Photo: Kansas State University

    Diseases are a major concern for greenhouse hemp growers, and they can be a factor that limits the profitable production of plants. The warm, humid greenhouse environment provides optimal conditions for reproduction of many pathogens.

    A good sanitation program can help reduce the need for chemical controls, which are a limited option for hemp growers and can improve the effectiveness of other practices for managing diseases.

    Sanitation Practices

    • Discard plants that are heavily infected and those with untreatable diseases such as root rots (Figure 1).
    • Isolate plants infected with treatable diseases until disease is eliminated.
    • Prune or remove infected tissues to reduce sources for spore production or propagule multiplication.
    • Discard prunings and culled plants immediately. Infected plant material should be buried, burned, or placed in cull piles (minimum 100 yds. from greenhouse). Do not compost diseased plant material.
    • Remove weeds and volunteer plants to limit alternate hosts and disease spread.
    • Do not reuse soil or potting media.
    • Do not bring outside soil into the greenhouse.
    • Disinfest pots, benches, floors, and tools to remove spores and propagules.
    • Clean excess soil and plant debris from floors and benches.
    • Cover dirt walkways with gravel, concrete, or landscape cloth.
    • Do not drag hoses and other tools along floors, where infested soil and plant debris can stick and be moved.
    • Empty the greenhouse between seasons or crops and clean and sanitize all surfaces.
    • Use footbaths containing sanitizers to prevent movement of propagules to clean areas.
    Hemp Greenhouse Sanitation_Figure 1

    Figure 1: Heavily infected plants should be discarded. (Photo: Kim Leonberger, University of Kentucky)




    The Latest


    Send press releases to Ernst@Agfax.com.

    View All Events


    Send press releases to Ernst@Agfax.com.

    View All Events