Common name: Blue Torch, Blue Candle, Blue Flame, Blue Myrtle Cactus, and Bilberry Cactus
Size: Up to 16 Feet
Myrtillocactus geometrizans grow best in porous, slightly acidic, and well-draining sandy soils with a 5 to 6.5 PH. This plant reacts negatively to stagnant soil water; thus, you should target excellent drainage.
You may pot your Blue Myrtle Cactus with a cactus mix. However, you may want to add some perlite to these soils to improve aeration and drainage. The best results may result from moving one part of pumice with two parts of cactus soil.
Alternatively, it’s relatively easy to make the ideal soil mix for Myrtillocactus geometrizans at home. For indoor growth, make the base with equal peat moss and bark quantities. Then proceed to add coarse sand and vermiculite, pumice, or perlite.
Suppose you’re growing outdoors. The base combination remains the same, after which you’ll have to mix one part of it with equal amounts of insoluble grit and coarse sand. You may add some gravel to enhance drainage.
It’s advisable not to make your mix base using compost, and that’s because compost boasts excellent nutrient levels, which may cause root burns.
The ideal light condition for Blue Flame varies according to its age and the current season. Younger Myrtillocactus geometrizans grow better in filtered sunlight or partial shade, while mature cacti prefer direct sunlight glare. Your window sills — particularly if the southern or western exposure gets to your room — are an excellent place for planting this plant at its genesis.
However, this desert cactus hibernates in the cold season. Therefore, the light requirements change for both young and mature Blue Torch during winter. Keeping the plant in a part of the room receiving indirect sunlight until spring is ideal here.
Myrtillocactus geometrizans seeds will usually germinate in 5-180 days, even under good conditions germination may be erratic.