In a procedure that involves cutting off the top of the rootstock cactus and the bottom of the Hibotan, the moon cactus is typically sold already grafted. The sliced edges of the two sections are secured together, and they soon heal together. Re-grafting the moon cactus onto a new rootstock will increase its lifespan.
Additionally, it can be grown from seed, although it will take at least a year to produce a usable specimen. Sprinkle some fine sand on top of the seeds after scattering them over a dry succulent mixture. For germination, moisten the flat and move it to a warm area. Replant the seedlings in groups for the best results once they are big enough to be taken out.
Removing the offsets, which are tiny replicas of the parent plant growing from the rootstock, is the more typical way to propagate moon cacti. In cactus potting soil, these easily divide and take root.
A moon cactus is made of what two plants?
Undoubtedly, many of you have already encountered this fascinating cactus. I’m sure some of you have one. These cacti, often known as “Hibotan” or “moon cacti,” are actually two separate cacti that have been grafted together rather than being a single species.
Gymnocalycium mihanovichii is the scientific name for the bright top portion. Both Paraguay and a few areas of Argentina are home to it. It is not nearly as colorful in the wild. The examples that are offered for sale in garden supply stores throughout the world are actually mutant species that lack chlorophyll, exposing other colours that are typically covered by green. These mutants can have a variety of colors, including deep purple, deep red, and yellow. These mutants would ordinarily perish as seedlings without chlorophyll.
Someone eventually had the brightly colored mutants grafted onto several species of cacti, with the hope that they may survive. Exactly this is what has happened. The bottom host cactus is interestingly not even in the same genus as the moon cactus. Most frequently, a species of Hylocereus is used for grafting (the same genus responsible for dragon fruit). I have no idea how or why this host was selected. Regardless, I hope that after reading this you have a newfound respect for these incredibly indestructible house plants.
How long do moon cactus live?
Moon cactus are short-lived because they are grafted. Your moon cactus should survive for a few years, possibly longer. However, eventually the two grafted plants will start to separate or split, and at that time the moon cactus will perish unless it is grafted onto a new foundation.
How often do you water a moon cactus?
Since moon cacti are indigenous to dry desert areas, they don’t require a lot of watering. It is preferable to fully water them, let them dry completely, and then wait a little while before watering them once more. This mimics the rare downpours that occur in their natural habitat. They usually only require watering once or twice a month as houseplants, and even less in the winter. The most frequent cause of death for moon cactus houseplants is overwatering.
What do I do with moon cactus pups?
Your moon cactus may start to develop tiny bumps or colored balls on the side that resemble miniature replicas of the plant. These are puppies or babies, not blossoms.
The moon cactus puppies can be propagated, but keep in mind that they won’t be able to survive without being grafted to a host cactus until they have some green or a darker spot on them. If you prefer the way your Moon cactus looks without them, you can either leave them in place or remove them.
Hylocerus undatus or Myrtillocactus geometrizans are typical stock cacti if you wish to try grafting them. In essence, you simply slice a little portion off the bottom of the Moon cactus baby and a slice from the top of the stock cactus, set them together with the sliced regions touching, then tie them together with twine for about a week or two until they bond.
Your moon cactus pup could be able to survive on its own without a graft host if it is a dark-colored type (occasionally dark purple, burgundy, or almost brown looking), or if it has any green on it. To determine if the pup will develop roots, you can pluck it off and place it on top of cactus soil.
Why is my moon cactus growing arms?
The bottom stock cactus will occasionally branch, sending up side shoots that resemble arms. There is no reason not to leave them if you like them, even if you might notice that they begin to grow more quicker than the rest of the plant and may eventually dominate it.
Using a pair of tidy, razor-sharp pruning shears or scissors, you may also clip the side growth. The cut will heal without any issues, and if you’d like, you may plant the cutting in a different container where it will establish roots and grow into a brand-new plant (without the moon cactus on top, of course).
How do you keep a moon cactus alive?
A moon cactus requires little maintenance to be healthy. Overwatering or when they split from their root stock kill the majority of moon cacti. Simply give your cactus some strong indirect light and water it every few weeks once the soil has dried up fully to keep it alive.
Why is my moon cactus dying?
Usually, grafted moon cacti only live for one or two years. This is due to the fact that the moon cactus depends on the graft with its host cactus (the green “stem”), and it will perish if that begins to split or separate.
Overwatering is another common cause of moon cacti death, and you can see it if the green base starts to become brown or mushy.
Why is the moon cactus top turning brown?
When a cactus turns brown, it usually means that it has been overwatered (especially if the brown areas feel mushy or squishy to the touch). However, if the plant has gone for several months without water, it may also mean that it has been underwatered.
It may have been scorched by too much direct sunlight or a grow lamp that was too close if the top of your moon cactus is becoming brown. Moon cactus only require indirect light; direct sunlight can cause them to burn or fade. Simply relocate your plant to a location with less sunlight if this is the case. The brown top won’t go away, but perhaps the healthy tissue that is still there will live and develop.
What kind of rootstock does moon cactus use?
This sweet “A mutant cactus is actually a cross between a rootstock cactus like Hylocereus and a cactus known as Gymnocalycium (the sicon). the word “Typically, the terms “moon cactus” and “orange moon cactus” are used interchangeably, while red forms can also be included.
How can I speed up the growth of my moon cactus?
Lunar Cactus Care
- Soil. The optimal cactus mix has a low pH and is rich and quick-draining.
- Water. Between waterings, let the soil mixture almost completely dry up before giving it a good soak.
- Fertilizer.
- Fading color
- Plant starts to fall apart.
- Upper ball is coming apart.
Are moon cacti artificial?
In the world of horticulture, few legal plants are as contentious as the well-liked moon cactus. Why not adore it? With their vividly colored spherical top and straight, dark green “stick,” these charmers resemble live lollipops. All year long, they can live contentedly indoors. Most people are unaware that these are grafted cactus, developed by two completely different varieties—Gymnocalycium mihanovichii and Hylocereus—and engineered to grow into a single plant—despite the fact that they are admired by many and cultivated by more. As a result of their unusual biochemistry, moon cacti have a short lifespan. To get the most out of these plants, you need to know what you’re getting.
What is a Moon Cactus
Gymnocalycium mihanovichii is a charming little South American native cactus that only gets to be 4 inches tall and 5 inches wide. They have 8–14 ribs, are virtually spherical, are often grey-green with burgundy accents, have short, bristly spines, and have white tufted tips. All of the vividly colored variants were first created in 1940 by a single nurseryman in Japan. Two of the ten thousand grey-green Gymnocalycium seedlings displayed an unusual crimson hue. He was incredibly successful in his attempts to hybridize these seedlings for more vivid colors.
However, the complete absence of a vital component called chlorophyll is what gives these Gymnocalycium mihanovichii their vibrant colors. The green pigment chlorophyll is necessary for photosynthesis. Photosynthesis is the method through which plants produce the oxygen we breathe. It makes it possible for plants to sustain themselves by converting sunlight into energy. The other pigment hues in the plant shine brightly without green chlorophyll. However, plants require photosynthesis to survive. The moon cactus was therefore created when the nurseryman grafted his beautiful Gymnocalycium onto the rootstock of another cactus.
Approximately 15 million grafted cacti are exported internationally now, with the majority being moon cacti designed and grown in South Korea. Brilliant hues of yellow, red, orange, pink, coral, peach, purple, and white are represented by them. Most typically, they are created by grafting a piece of the 30 foot tall climbing cactus Hylocereus with a vividly colored Gymnocalycium mihanovichii.
What is a Grafted Cactus?
In horticulture, the process of grafting involves joining two plants together to force them to develop into a single organism having traits from both. Fruit trees, for instance, are grafted to produce sweeter fruit on harder rootstock. Most fruit trees, tomato plants, rose bushes, and many other plants employ grafting. A plant chosen for its health, vigor, and capacity to flourish in certain growing conditions is grown atop another plant chosen for its decorative or fruiting features. The rootstock is the plant at the bottom, and the scion is the plant at the top. The beautiful Gymnocalycium mihanovichii is the scion of the grafted cactus shown here, and the robust rootstock is from a Hylocereus. However, you can graft any compatible cactus species.
Numerous grafted plants will live lengthy lives. However, how compatible the scion and the rootstock are on a variety of fronts determines how long the plant will live. In the case of moon cacti, the compatibility problems quickly put an end to these well-liked plants. Gymnocalycium only reaches a height of a few inches, whereas Hylocereus can reach a height of 30 feet. It is challenging to properly water both succulent plant portions because to their different development habits. The rootstock will eventually outgrow the scion, even with sufficient irrigation. Although it has been said that moon cacti can live for up to five years in good health, most of the time the plants only last a few years and perish within a few months.
The only way to save the other half of a moon cactus when one side dies is to cut the plant in half. Cutting off the top is all that is required for the rootstock to continue to grow and thrive, provided the base is still sound. You will probably need to transplant the colorful scion of your moon cactus to another cactus in order for it to survive. The purple Gymnocalycium scions occasionally have enough chlorophyll to take root and develop on their own. However, all other colors, from red to yellow to white, will quickly perish if they are not anchored into a strong rootstock that will manage photosynthesis for the emerging plant.
How to Graft a Moon Cactus
It’s fairly easy to graft two cactus plants together. Always use sterile, sharp implements. Take the healthy plant’s top to prepare the scion. Cut the top of a Gymnocalycium mihanovichii off above its basal plate, where the roots of the moon cactus emerge. Take a rooted stem that is 2 to 5 inches long from a Hylocereus, Cereus, or Trichocereus cactus to prepare the rootstock. Cut the rootstock plant’s top off, then trim the margins so they taper to the size of the scion cut. You can see in this shot where the Hylocereus rootstock’s sides were reduced in size to accommodate the scion cut.
Place the scion and rootstock together, their newly-cut edges touching. Secure the top of the graft to the bottom by wrapping a rubber band or piece of scotch tape around the bottom of the pot and the top of the scion. Allow the graft to heal for two to three weeks by placing the plant in warm, indirect light. This video can help you learn how to graft cacti.
Isn’t it wonderful that plants not only survive but also thrive through this process? There are numerous YouTube tutorials that will walk you through the process of grafting cacti and succulents if you’re interested. A moon cactus is a wonderful spot to start grafting any kind of plant if you’re interested in learning how.
Moon Cactus Care
The maintenance of moon cacti is identical to that of other cacti. Grow your moon cactus in quick-draining succulent soil whether you’re growing it alone in a pot or combining it with other succulents. The quickest method to kill your succulent, like every other succulent, is to overwater it. Water only when the soil is really dry, and then water deeply. Even if your moon cactus is indoors, stop watering it and leave the soil entirely dry during the chilly winter months. Come spring, start watering again. Give a modest bit of water over the winter if your graft is only a few months old.
Lighting your moon cactus can be a little challenging. The native Gymnocalycium mihanovichii can be found growing behind larger plants in shaded environments. Those cultivated for bright color are more susceptible to sunburn if they lack chlorophyll. Hylocereus can tolerate low light, but full sun is better for the plant’s fruit and flowering.
The moon cactus may thrive year-round inside and performs best in bright, indirect light. These plants do well in average room temperatures but are not cold hardy below 48 F (8.88 C). It can burn if you place it in the direct sunlight coming from a nearby window.
Pruning a Moon Cactus
The strong rootstock of the moon cactus will occasionally branch and develop side shoots. When this occurs, you must reduce the side growth in order to prevent the Hylocereus from quickly outgrowing its vibrant scion. Simply cut it back to the stem with a pair of tidy, sharp pruning shears. You now have a fresh stem that can be used as rootstock for a new grafted cactus or to create a completely new plant.
Moon Cactus Flowers & OffsetsSucculent offsets are the baby succulents that form at the b…
While many people mistake a moon cactus’ colorful offshoot for its bloom, moon cacti do blossom eventually. Large and ostentatious, the daisy-like blossoms have several petals that range in color from soft pink to vivid scarlet.
A moon cactus frequently develops tiny, rounded bumps that are the same color as the scion but more vibrant. Offsets, not flower buds, are what these are. They begin as lumps and grow into tiny spheres. You may leave them there if you choose. Alternately, cut them off and transplant the plant to a fresh rootstock. This is how moon cacti are spread. Try rooting a few of the offsets from a purple Gymnocalycium mihanovichii to see whether they can survive without a graft.
What is the Moon Cactus Controversy?
Is it difficult to imagine that such a lovely little plant would be the subject of debate? Both enthusiastic supporters and opponents of the moon cactus are active, it seems. The plant is wonderful for people who adore it. Even inside, it is simple to grow and take care of. A moon cactus is frequently the first plant they ever acquire. It’s kind of like a gateway cactus, I think! According to its critics, the plant is “nearly as false as painted succulents or cactus with fake flowers stuck on. They protest the grafting, limited lifespan, and hybridization that render so many cactus plants completely unable to survive on their own.
I suppose that puts me in the middle of everything. Although I don’t particularly like moon cacti, I can certainly see their charm. And in my book, anything that inspires more people to grow and like cacti and succulents is a winner! Their brief lifespan, though, scares me. With this plant, it seems as though people are being set up to fail. However, because it has so many various looks, it is a simple plant to learn grafting on. I’ve mentioned it before, but I’m all for it if you know what you’re purchasing and like it. That was the aim of my blog post, after all!
Shopping for Moon Cactus
Most consumers will easily be able to order a variety of grafted moon cacti from their neighborhood large box retailer, such as Home Depot, Lowe’s, or Walmart. The grocery store frequently has them in stock in the floral section. Take a moment to give the stock a thorough inspection even though it is typically extremely healthy. Additionally, you can get a variety of colors and varieties of succulents from Mountain Crest Gardens, Leaf & Clay, The Succulent Source, and Amazon online. Cactus cultivars that make good rootstock are also available as cuttings and rooted plants. Think about giving grafting a try!
So, how do you fit into the big moon cactus debate? Will you try your hand at grafting, cultivate your own moon cactus, or pass on everything? I’d be delighted to hear from you. I would appreciate a comment, and I will respond immediately away. I’m happy to answer your questions or engage in spirited debate if necessary.