Farmers often use greenhouses to raise seedlings, which not only keeps the plants healthy, but also prevents pests and diseases. Since greenhouses can protect crops from overheating or cold weather, and can also protect plants from pests, flowers are usually grown. Farmers will sow delicate plants such as vegetables, fruits, etc. in greenhouses in late winter and early spring, and then transplant them outdoors when the weather warms up. Different from outdoor planting, planting in a greenhouse can effectively control problems such as pests, diseases, temperature, and humidity. Not only can the plants grow healthily, but the stable environment of the greenhouse can also be used to cultivate special varieties, increasing the chance of successful cultivation.