Ashe Juniper (Juniperus ashei) is a drought-tolerant evergreen shrub or small tree, native to northeastern Mexico and the south-central United States north to southern Missouri; the largest areas are in central Texas, where extensive stands occur. It grows up to 5-10 m tall, rarely 15 m, and provides erosion control and year-round shade for wildlife and livestock.

The feathery foliage grows in dense sprays, bright green in colour. The leaves are scale-like, 2-5 mm long, and produced on rounded (not flattened) shoots. It is a dioecious species, with separate male and female plants. The seed cones are globose to oblong, 3-6 mm long, and soft, pulpy and berry-like, green at first, maturing purple about 8 months after pollination. They contain 1-2 seeds, which are dispersed when birds eat the cones and pass the seeds in their droppings. The male cones are 3-5 mm long, yellow, turning brown after pollen release in December to February. The pollen causes a severe allergic reaction for some people.

Ashe Juniper is sometimes known in the area as "Mountain Cedar", though it is not a cedar; locals refer to the allergy as "cedar fever". The wood is naturally rot resistant and provides raw material for fence posts.