Maximize propagation light levels for cuttings

If you are propagating cuttings during winter, that is the time to maximize light levels, said Dean Krauskopf with Michigan State University Extension.

The greatest impact of supplemental lighting is during propagation. The cost for this supplemental light is lowest at this time because of the number of plants per square foot. Maximize the amount of light entering the greenhouse by cleaning the glazing inside and out or even replacing it.

Maintain optimum rooting temperatures of 72°F-78°F using bottom heat and by placing plastic skirts around the benches to ensure the heat goes up around the cuttings and isn’t lost around the bench edges. The tops of the plants don’t need to be as warm as the rooting medium.

Check the temperature of your mist water. Water that is 50°F or less can lower the temperature of the medium, which can take an hour or longer to recover to the optimum temperature level.

{sidebar id=1}

For more: Dean Krauskopf, Michigan State University Extension, 28115 Meadowbrook Road, Novi, MI 48377-3128; (248) 347-0269; krauskop@msu.edu.