Whether you are new to growing microgreens or have been growing them for some time, you probably have questions concerning how to optimize your growing efforts. If you are trying to determine the best temperature to grow microgreens, you have come to the right place.
Think about the last time you visited a greenhouse or an indoor botanical garden. The air was warm and humid, wasn't it? Learning how to control the humidity and temperature can help ensure your success. Unfortunately, it can be tricky to determine the optimal temperature for your microgreens. How can you determine and control optimal temperatures throughout the growth cycle? Also, how can you keep them regulated throughout the germination and growing process?
Microgreens typically do well at room temperature, which is around 70 degrees Fahrenheit. Because the growth cycle of microgreens is so short, maintaining the optimal temperature will be much easier. Each stage of the growth cycle requires slightly different temperatures. Furthermore, different types of microgreens require different temperatures. The following information is to be used as a guide.
Seeds require three things for optimal germination – the correct temperature, optimal moisture levels, and oxygen. If you do not provide these three things, your seed may remain dormant, or they may sprout but then perish.
Maintaining optimal moisture levels is done with a humidity dome. During germination, the humidity level should be between 50 percent and 80 percent. You will want to daily check the moisture level of your soil and add water if needed.
Microgreen seeds germinate best when the soil temperature remains about 72 degrees Fahrenheit. One of the best ways to maintain optimal soil temperatures is to use a heating mat. A heating mat keeps the soil temperature consistent. The heating mat has wired running throughout, which ensures even heat distribution. Finally, the heat mat can be set to a particular temperature. The thermostat turns the heating mat on and off as needed to maintain the optimal germination temperatures. With a heating mat, all you need to do is turn it on and leave it until your seeds have germinated.
Once the blackout dome has been removed, it is time to turn off your heating mat as it is no longer needed. Microgreens grow best in moderate temperatures of 65 degrees to 75 degrees Fahrenheit. If the ambient temperature is allowed to drop below 65 degrees Fahrenheit, the foliage can become damaged. Conversely, higher temperatures increase the risk of disease.
If your indoor temperatures are comfortable for you, your microgreens should be happy during the growth cycle. It should be noted that certain microgreens prefer cooler temperatures. These microgreens include broccoli, spinach, and kale, along with other brassicas. Conversely, certain microgreens prefer warmer temperatures. These microgreens are grown during the hottest part of the summer and include corn microgreens, sunflower microgreens, and herb microgreens like parsley.
It is important to note that various temperatures can impact the watering requirements. If the ambient temperature of your house is on the warmer side, you will want to ensure that you increase the airflow around your microgreens. One of the best ways to do this is to use microgreen circulation fans.
The optimal temperature for your microgreens depends on the growth stage of your microgreen. Furthermore, the different types of microgreens require different ambient temperatures. For best results, research each type of microgreen individually. We have growing information on each type of microgreen, which includes germination times and temperatures as well as time to harvest and the recommended ambient temperatures required during the growth phase.