Horticulture helps clean up our environment by recycling dead plants back to the soil. Horticulture has many uses for humans and also offers a variety of food and plants. Horticulture is helpful to the environment because it can help recycle things and help keep our environment clean. They are also helpful to humans because they have a variety of food that we can eat and different plants that we can use for different reasons, which help humans to have a better life.