A large segment of nurseries is comprised by trees, which play a pivotal role in improving our environment. They also help keep our air supply fresh and clean by using up carbon dioxide that we exhale and that factories and cars emit, to perform photosynthesis and produce oxygen. In addition, tree roots hold the soil and prevent silt from washing into streams.
Nurseries play an important role in environmental conservation and protection.
The nursery industry works to control waste water discharge, and to implement pest management practices designed to reduce the use of chemicals. Nurseries try to use biological materials which are more natural than some harsher methods, and pest and disease control strategies which employ the use of chemicals which are less toxic to the environment.