Dioon spinulosum - 40 cm C.T.
This plant is fast growing for a cycad, may be the most popular Dioon. It prefers a subtropical or tropical climate, and partial shade or filtered sun. It handles moisture and humidity better than most cycads, but must be kept in well-draining soil like nearly all cycads. It is hardy down to the mid-low 20s Fahrenheit.
Dioon spinulosum can work as an indoor plant in a brightly lit spot, or in a conservatory or greenhouse. It adds an exotic but formal touch in any garden in warm temperate to tropical climates. It can be an excellent feature plant in a tropical or desert landscape, often substituting for a true palm where a large crown is desired without a tall trunk. Dioon spinulosum can also have a spectacular place in a small garden where space is limited, or as an exotic striking understory plant beneath large trees or any structure that allows at least filtered sunlight.
CITES Appendix: 2