Plants, fruits, vegetables, flowers and more are now grown inside greenhouses. They use solar energy to heat the plants, trapping the heat inside and making it very conducive for vegetation cultivation. Typically, these structures are made of glass or plastic materials, to capture the warm air inside the greenhouse. Cultivating plants in greenhouses have special requirements, compared to planting outdoors. First, it is important to regulate pets and diseases from the plants. The temperature should also be monitored, to achieve the ultimate growing environment.