![]() Some of the ways of doing this are by using heating mats, installing a greenhouse heater, or using bubble wrap or insulation to keep the heat in. If you live in an area with cold winters, you may need to take some extra steps to keep your greenhouse warm. Heating a greenhouse in the winter will help keep the plants inside healthy and thriving, but it’s not absolutely necessary. Do you need to heat a greenhouse in the winter? the optimum temperature is the best growing condition to achieveģ9 degrees Fahrenheit would be too considered too cold for most crops in a greenhouse. At the optimum temperature, between 70 and 90 degrees Fahrenheit, crops will grow at their fastest rate. It’s this temperature that needs to be met otherwise your crops won’t grow.Īt the base temperature, your crop will grow at its slowest rate, or not at all. When determining how cold is too cold for a greenhouse, you will need to know the base temperature of your crops. ![]() It’s the maximum (or minimal) temperature that a plant can tolerate before stopping growth. The minimum temperature at which a plant will no longer grow is known as the base temperature. Cold-sensitive plants – These plants have a base temperature of around 46 degrees Fahrenheit | 8 degrees Celsius.Cold-temperate plants These plants have a base temperature of between 40 – 45 degrees Fahrenheit | 4-7 degrees Celsius.Cold-tolerant plants – These plants have a base temperature of around 39 degrees Fahrenheit | 4 degrees Celsius.There are generally three different optimal growing conditions, they are called cardinal temperatures.įor optimal growing conditions, you will need to arrange your plants into their cardinal temperatures. If the crops fall into the “Cold-tolerant plants” then the lowest base temperature where the crops will no longer grow would be around 39 degrees Fahrenheit (4☌).ĭifferent plants grow and thrive best in different temperatures. ![]() The coldest a greenhouse should go to will determine the crops it has.
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