Juniperus is a genus of about 60 species of conifer trees, shrubs and groundcovers. Junipers are widely grown for their diverse ornamental qualities including needle-like foliage in shades ranging from green to blue. Junipers are tolerant of harsh growing conditions, including drought and poor soil. However, many are susceptible to tip blight and rust diseases, especially in shaded, wet sites. Insect problems include scale, needle miners and bagworms.