It is important to keep your greenhouse temperaturee between 70-78 degrees Fahrenheit. This range suits a wide variety of plants.

Find out the desired humidity range for your plants. After you know what they need, take several readings of the humidity in your growing area--try late at night, early in the morning, noon, and evening. This will indicate whether a humidistat is right for you.

You need to consider how much area is heated by each product. A reliable vendor will share a chart showing how much area is heated by each of its products. This is vital information without which can spell disaster for your entire growing operation.

Heating cables can be a resourceful way to sprout stubborn seedlings. Plants tend to hatch better in warm soil but a space heater doesn't heat the soil to the indicated temperature quickly enough. Heating cables with a built-in thermostat heat up every time the soil falls below optimum levels.