d is endemic to the Easter Cape region of South Africa. It is one of the most western Encephalartos species in Africa (the other being Encephalartos lehmannii, which it partially shares habitat with). Its habitat starts west of Joubertina (located in the Kouga Mountains) throughout Kouga and Suuranys Mountains to the west and north.
Other Characteristics: This cycad is quite attractive and variable. Consistent through all variations, this plant is quite symmetrical and tends to have stacking leaflets. This species can be many different colors, from a limey green to a powdery silver (and every color in between). Additionally, this species can be armed or completely unarmed, meaning the leaflets and petiole may or may not possess spines. This plant is medium in stature, and can eventually reach heights of ten to twelve feet after more than a century. Leaf length can vary, but are generally between three to five feet. The caudex (trunk) on this species tend to be thick/stout, though some plants will have more elongated caudices. Trunk widths can range between twenty to thirty inches, depending on the age of the specimen, growing conditions and the plant itself.
Culture: Encephalartos longifolius is a full sun plant for most areas in California. Though in extreme desert heat, this species will need protection, either partial sun or filtered light. They like soil that drains well and prefer a slightly acidic pH.
Landscape Usage: This species is fast growing, making new sets of leaves once to twice a year (depending on culture). They are quite showy and should be used as a focal point in the garden. As they don't make massive plants, it is recommended to place them in the forefront of your garden plantings where they can be adequately appreciated. They are quite adaptable and can work in tropical, Mediterranean and desert type landscapes.