Dioon edule, commonly known as Chestnut Dioon, is an evergreen cycad native to rocky hillsides and arid regions of the Gulf Coast of Mexico. This species is part of the ancient group of gymnosperms and is characterized by its pinnate leaves with unarmed (spineless) leaflets, which distinguishes it from other Dioon species. Dioon edule typically grows slowly to a height of 3-6 feet (1-2 meters) with a similar spread, forming a dense, symmetrical rosette of bluish-green leaves.

The Chestnut Dioon is valued for its architectural foliage and prehistoric appearance, making it a striking addition to xeriscapes, rock gardens, and as a container plant. It is drought-tolerant once established, requiring minimal maintenance and water. Dioon edule prefers well-draining soil and can tolerate a range of light conditions from full sun to part shade. While it is slow-growing, this cycad can live for many years and is relatively free of pests and diseases. It is dioecious, meaning individual plants are either male or female, with females having longer intervals between cone production. The cones themselves are not showy, but the rarity of their appearance can be of interest to plant enthusiasts.CC BY-SA 4.0