A genus composed of about sixty species of coniferous evergreens, thirteen of which are native to the United States. Junipers range in habit from large trees to shrubs to sprawling groundcovers. Foliage color ranges from light green to dark green to blue green to yellow. They require full sun conditions and are excellent plants for urban areas, as they will tolerate pollution, salt spray, poor soil, and a wide range of soil pH. Junipers can be used as hedges, screens, groundcovers, specimens, or in mass. The two native species listed, Juniperus horozontalis, and Juniperus virginiana are more susceptible to disease and pest problems than the non-native species. Superior cultivars of these species should be selected.