In these greenhouses, seedlings are usually planted from seed or as seedlings and a healthy growth environment is created using soil or special substrates. Factors such as temperature, humidity, and light are meticulously controlled in the greenhouse. Seedling greenhouses are carefully designed so that seedlings can develop strong root systems and healthy trunks. These types of greenhouses provide ideal conditions at the initial stage of plants, contributing to the production of healthy seedlings that will later be transferred to gardens or fields.