Are you on the lookout for a plant that is a fun conversation starter and is also a low-maintenance plant to elevate your indoor or outdoor space? Look no further than the blue myrtle cactus, known as Myrtillocactus geometrizans. Its botanical name is derived from the Greek word "myrtillus," meaning whortleberry, and "geometrizans," referring to its geometrically patterned ribs. 

Native to Mexico, it has several common names: blue flame cactus, bilberry cactus, whortleberry cactus, and, of course, blue candle cactus as its color and shape like a blue candle. 

This blue myrtle cactus, along with its popular varieties Myrtillocactus geometrizans 'Fukurokuryuzinboku' (titty cactus or breast cactus) boobie cactus and crested blue candle cactus - Myrtillocactus geometrizans crest is considered rare due to its unique appearance and limited distribution in certain regions. Its distinctive shape and vibrant colors make it highly sought after by collectors and enthusiasts.    

The blue candle cactus is a tall, branched candelabra-like tree cactus that can grow up to 20 feet tall with its bluish-green thick stems that are covered in small, white central spines. The growth rate of this attractive columnar cactus is fast. With the right nurturing and care, it can grow fairly tall in height and width. 

The flowers of the blue myrtle cactus are small, showy greenish white that bloom in the summer and are followed by small dark red edible fruits.

To propagate your blue myrtle cactus species, you can simply do it by stem cuttings. 

One of the most unique features of the blue candle cactus is its ability to grow aerial roots that grow above the ground and provide additional support to the Myrtillocactus geometrizans. This adaptation allows the cactus to grow tall and straight, even in windy conditions. 

Additionally, this blue myrtle cactus can be used in traditional medicine after consulting with healthcare experts for proper dosage. The fruit of this myrtle cactus is said to have medicinal properties and has been used to treat a variety of ailments, including digestive issues and skin conditions. It is a small, round, edible fruit with a mildly sweet and tangy flavor.  

Overall, the friendly blue myrtle cactus is not only safe for humans and pets, but it is also a unique plant with its dense growth that is sure to add joy to any garden or collection.

Watering Needs

Desert plants, such as the blue myrtle cactus, are adapted to grow with minimal water. Cactus store water throughout their stems, and as a result, they are one of the ultimate drought-resistant plants. Cacti are like Camels; they drink up a lot of water quickly and then can last a long time before needing water again.

Usually, watering once every two or three weeks is ample during the spring and summer months. In the winter, if it doesn't rain, you still should still only water them once a month at the most. If your Myrtillocactus geometrizans don't receive enough moisture for an extended period of time, discoloration, pale stems, and browning can occur, leading to stunted growth. In contrast, overwatering can cause root rot and fungal infection. 

Light Requirements

The Blue myrtle cactus is a sun-loving plant that requires full sun to partial shade to thrive. If you are growing it indoors, it is best to place the cactus in a south-facing window or in an area that receives at least 6 hours of direct sunlight per day. 

While this blue myrtle cactus can tolerate some light shade, it will not grow as well in low-light conditions. If you notice that your blue myrtle cactus is not growing as quickly as you would like or if the leaves are turning yellow, it may be an indication that it is not receiving enough sunlight. Overall, the blue candle cactus is a hardy plant that is well-suited to bright, sunny environments. 

Optimal Soil & Fertilizer Needs

The blue myrtle cactus likes very airy, porous, nutrient-rich soil with a pH of 5.6 - 6.5, Cacti require well-draining soil that dries completely between waterings. Your soil must have a sandy texture and a low water-holding capacity, just like desert soil. Because these plants do not grow well (or at all) in waterlogged soil, you must use a well-draining soil mix. Ideally, you want to use our specialized cactus potting mix that contains 5 natural substrates and organic mycorrhizae to promote the development of a strong root system that helps your Myrtillocactus geometrizans cactus to thrive.  

Natural fertilizers also last longer and keep your soil alive by adding other beneficial compounds and microbes that encourage the cactus plant's health and nutrient absorption. Use a balanced fertilizer with an equal ratio of NPK (5-10-5) for healthy growth of your cactus. So, skip those harsh chemicals and give your Myrtillo cactus some love with some awesome organic fertilizer! 

Hardiness Zone & More

Keep this Myrtillocactus geometrizans at warm temperatures at all times. If you plant your blue myrtle cactus outdoors, you won't likely be able to grow it. It doesn't like humidity because it is adapted to a dry, hot climate.  

This blue myrtle cactus is an outdoor tropical cactus that can be grown in USDA hardiness zones 9 and 11. In cooler zones, it can be kept outdoors during the summer and brought in as the temperature drops below 35 F. Although this semi-hardy cactus can withstand temperatures below 25 F for brief periods, prolonged frost can be dangerous. 

We think you will love this cactus– order your very own Myrtillocactus geometrizans - Blue Myrtle cactus today and start enjoying its beauty in no time!