Blue Myrtle-Cactus is a blue grey highly branched columnar candelabra like tree cactus that creates a dense growth of stems growing closely together. Easy to care for but needs a lot of space as in nature it can grow up to 4-5 meters.
Myrtillocactus geometrizans is a columnar, highly branched, candelabra-like cactus up to 14.8 feet (4.5 m) tall. The stems are blue-grey, up to 4 inches (10 cm) thick, with 5 to 8 ribs that are approximately 1 inch (2.5 cm) in depth and with areoles about 1 inch (2.5 cm) apart. Each areole generally has 3 to 5 spines up to 0.5 inch (1.3 cm) long. The flowers are greenish white and up to 1.4 inch (3.5 cm) in diameter. The edible fruits are dark red, oblong and up to 0.8 inch (2 cm) in diameter.