In this subtitle the following words have the meanings indicated. “Commercial Maryland Native Plant List” means a list of plants that are native to Maryland that are commercially available and appropriate for growing in residential or commercial landscapes. “Native plant” means a plant that occurs naturally in the State and surrounding region, ecosystem, and habitat, without direct or indirect human actions. “Native plant” includes a plant that: Was present before colonial settlement; or Is listed as native to Maryland on the Maryland Plant Atlas website. “Native Plant Specialist” means the University of Maryland Extension agent hired under § 10–403 of this subtitle. “Program” means the Maryland Native Plants Program.