Encephalartos lehmannii is also known as the Karoo cycad. It is among the hardiest and most drought-resistant of the cycads of southern Africa. Encephalartos lehmannii is probably the bluest plant from the famous group of blue cycads from South Africa. This clumping, medium-sized plant grows to 6 ft. tall, with leaves up to 5 ft. long. Encephalartos lehmannii (the Karoo Cycad) prefers full sun, in a very well drained soil. In habitat, it grows in sandstone slopes in the Eastern Cape Province of South Africa. It is frost tolerant. You buy 2 fresh seeds usually not for sale.