Myrtillocactus geometrizans (Mart.) Console
Photographer: Daiv Freeman
Growth Habits: Multi branching columnar tree cactus with a dense growth of stems. It grows up to 4.5 m (15feet) tall, and up to 5 m (16 feet) in wide.
Scientific name: Myrtillocactus geometrizans.
Common names: Garambullo, Bilberry Cactus, Blue Flame, Whortleberry Cactus.
Synonym: Cereus pugioniferus, Cereus geometrizans, Myrtillocactus grandiareolatus, Myrtillocactus geometrizans var. pugionifera, Myrtillocactus pugionifer.
Etymology: Myrtillocactus :-The name refers to the fruits which resemble those of the bilberry (Vaccinium myrtillus)
geometrizans :- Derives from the Latin adjective "geometricus" meaning "geometric"
Origin: Northern central Mexico down to Oaxaca.
Light: Light shade when young, full sun later.
Compost: I find the usual standard well draining mix works well.
Water: Regular from spring to autumn allow soil to dry between waterings, dry in winter.
Flower: Creamy white starting once the plant reaches around 2 feet (0.6m) tall.
Min temp: References suggest -4 C (25F) for very short periods, my experience suggests they are best kept above freezing.
References. http://www.ipni.org
http://www.cactiguide.com
http://www.cactus-art.biz
http://www.desert-tropicals.com
Comments. Can be used as a grafting stock for small globular cacti and seedlings.
Spine length can vary from tiny to around 2 1/2 inches(65mm)
habitat image from Near Zimapan – Hidalgo state – Mexico.
Photographer: Jean-Paul Lafournere
close-up of flower.
Photographer: Daiv Freeman
long spined plant.
Photographer: Joel Lode