Gymnocalycium mihanovichii - Grafted Moon Cactus [red]
SKU:C2KY4260
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Highlights
Red Grafted Moon Cactus (Gymnocalycium mihanovichii and Hylocereus): Grafted cactus about 3.0" tall with a fire engine red G. mihanovichii atop green Hylocereus root stock. The mutant cacti on top have no chlorophyll which exposes the red pigmentation. Since chlorophyll is necessary for photosynthesis, these cactus can only survive because they are grafted onto a Hylocereus cactus with normal chlorophyll.
This cactus variety will not survive a hard frost, but if there is a risk of freezing temperatures it can be brought indoors to grow on a sunny window sill or under a grow light. Cactus need bright sunlight, great drainage, and infrequent water to prevent rot. Pick containers with drainage holes and use well-draining cactus and succulent soil with 70% to 80% mineral grit such as coarse sand, pumice, or perlite. Water deeply and wait for the soil to completely dry out before watering again.
Product Size
2.5" Pot
Current Primary Color
Red
All Seasonal Colors
Green
Grow Zone (Hardiness)
Zone 10 (30F)
Recommended Light Conditions
Bright Indoor Light, Full Sun
Growth Habit / Shape
Vertical Grower / Tall Stem
Special Characteristic
Slow Grower, Variegated
THIS PLANT IS HARDY IN ZONES 10+
10
WHAT IS MY HARDINESS ZONE?
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Questions & Answers
Popular Questions
• Staff Answer
Don't water it for a couple weeks and let that scab dry out. Unfortunately, the moon cactus won't return as it was a separate cactus that was grafted onto the green stemmed cactus. However, the good news is that green stem is still alive and is a beautiful Hylocereus!
Give it full sun and water only when the soil has been dry for a couple of days and it should produce a branch or two and start growing from there. Hylocereus are known for their gorgeous, showy flowers. We can't be sure which Hylocereus it is however, so it'll be a surprise what the flower will look like exactly.
Give it full sun and water only when the soil has been dry for a couple of days and it should produce a branch or two and start growing from there. Hylocereus are known for their gorgeous, showy flowers. We can't be sure which Hylocereus it is however, so it'll be a surprise what the flower will look like exactly.
• Staff Answer
Yes! However, it's worth noting that the arm won't technically be grafted moon cactus. In fact, it won't be moon cactus at all!
Moon cactus refers only to the upper, brightly colored ball cactus. This cactus is so variegated that it can't do photosynthesis on its own. Because of this, it's grafted onto the green stem, which is a totally different cactus, which can do photosynthesis for itself and the moon cactus. This green stemmed cactus is the one that's branching.
If I had to guess what the green cactus is, I'd say it's Hylocereus guatemalensis, or purple dragon fruit. However, it could be another Hylocereus. It's care will be the same as your grafted moon cactus but it may grow much faster and larger without having to "care" for that moon cactus. It should be able to flower as well and may even produce edible fruit!
Moon cactus refers only to the upper, brightly colored ball cactus. This cactus is so variegated that it can't do photosynthesis on its own. Because of this, it's grafted onto the green stem, which is a totally different cactus, which can do photosynthesis for itself and the moon cactus. This green stemmed cactus is the one that's branching.
If I had to guess what the green cactus is, I'd say it's Hylocereus guatemalensis, or purple dragon fruit. However, it could be another Hylocereus. It's care will be the same as your grafted moon cactus but it may grow much faster and larger without having to "care" for that moon cactus. It should be able to flower as well and may even produce edible fruit!
• Staff Answer
Like all cacti, this plant requires little water and lots of light. A south facing window or a southern outdoor exposure is ideal. It will not tolerate freezing temperatures nor consistently moist soil. Use a gritty soil that drains water well and be sure the pot you plant it in has a drainage hole.
It's important to note that the green stem and the ball on top are two separate cacti that have been grafted together, because the ball cactus cannot survive on its own. If the ball cactus dies, the green stem will live on. This green stem is, likely, Hylocereus undatus. That's a climbing, vine cactus also known as dragon fruit.
It's important to note that the green stem and the ball on top are two separate cacti that have been grafted together, because the ball cactus cannot survive on its own. If the ball cactus dies, the green stem will live on. This green stem is, likely, Hylocereus undatus. That's a climbing, vine cactus also known as dragon fruit.
• Staff Answer
If it's the red part that is forming a new offset, it's best to just leave it alone. It would have trouble making its own root and would have to to be grafted in order to survive.
If it's the green part that's forming a new branch, then you can pluck it off and form a new plant. This is, very likely, a dragon fruit cactus. However, it won't develop it's own red ball as this ball and the green stem are two separate plants that have been grafted together.
If it's the green part that's forming a new branch, then you can pluck it off and form a new plant. This is, very likely, a dragon fruit cactus. However, it won't develop it's own red ball as this ball and the green stem are two separate plants that have been grafted together.
• Staff Answer
If it flowered, it will flower again. However, what we're afraid you're talking about is the red ball part of the cactus. That red ball isn't a flower, it's actually a separate cactus that has been grafted on to the green stalk. If this red ball turned brown it will not sprout another.
Fortunately, the green stem is, likely, Hylocereus undatus which is a gorgeous plant with some of the largest flowers of all the cacti. These flowers open at night and, if pollinated, will produce dragon fruit. A red, scaly fruit with delicious white flesh.
In order to give the H. undatus space to grow, remove the dead moon cactus (the red ball part). Hylocereus undatus likes a little less light so where it's at is good for now. Water it sparingly and eventually it will want something to climb, like a trellis. Good luck!
Fortunately, the green stem is, likely, Hylocereus undatus which is a gorgeous plant with some of the largest flowers of all the cacti. These flowers open at night and, if pollinated, will produce dragon fruit. A red, scaly fruit with delicious white flesh.
In order to give the H. undatus space to grow, remove the dead moon cactus (the red ball part). Hylocereus undatus likes a little less light so where it's at is good for now. Water it sparingly and eventually it will want something to climb, like a trellis. Good luck!
• Staff Answer
Super gritty, well draining soil like this Bonsai Jack Mix is best for cacti.
Source: https://mountaincrestgardens.com/soil...
Source: https://mountaincrestgardens.com/soil...
• Staff Answer
Shop Succulent Soil Here
Succulents need grittier soil than other plants because they are adapted to dry conditions and store water in their leaves. Regular potting soil mixes stay damp for long periods of time, which can cause rot in succulents. Instead, use a sandy, well-draining soil so you can water thoroughly without leaving your succulent in standing water.
IN POTS…
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• Staff Answer
Our plants can be transplanted immediately upon arrival.
If you want to wait to transplant, they can remain in their original containers for up to a month. If the pots came in a plastic carrier tray, remove the pots from the carrier tray prior to the first watering.
Keep the plants indoors near a sunny window or outdoors under a roof (only if outdoor temperatures stay above your succulent's minimum hardiness temperature). Water only after the soil is fully dry by drenching from above with a faucet, hose, or watering can. Gently shake excess water from the leaves and allow containers to drain completely.
• Staff Answer
Fertilizing is not necessary, but it is a good option for succulent growers who want to encourage faster, larger growth. It can be used on mature plants with established roots. Only fertilize in the growing season (spring and summer for most varieties) to avoid weakening or burning dormant plants. Use a light touch and make 2-3 applications of low-Nitrogen, diluted fertilizer each year (N-P-K ratio around 5-10-10). You can find specially-formulated cactus / succulent fertilizers in most garden centers or go organic with compost tea or bone meal.
Example: Miracle-Gro Quick Start, diluted to half strength
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