The cactus that has red or yellow tops is commonly known as the moon cactus. This unique plant is actually a grafted specimen, meaning that two different cactus species are combined to create a single plant. While the colorful top portion is referred to as the scion and is typically red, orange, or yellow, the lower green cactus host portion can vary in species but is commonly a Hylocereus cactus.
One of the most popular scion species used in moon cacti is Gymnocalycium mihanovichii. This cactus has a vibrant and eye-catching color that adds a pop of brightness to any indoor or outdoor space. The scion portion grows on top of the host cactus, creating an interesting visual contrast between the colorful top and the green base.
The host cactus, often a Hylocereus species, provides the root system and support for the scion. Hylocereus cacti are commonly known as dragon fruit or pitaya cacti and are native to Central and South America. They have elongated stems with spines and produce large, showy flowers. The combination of the colorful scion and the green host cactus creates a unique and striking plant that is sure to catch the eye.
Moon cacti are typically grown as potted plants rather than garden specimens. They are well-suited for indoor cultivation, as they thrive in bright, indirect light and warm temperatures. These cacti are relatively easy to care for, making them a popular choice for both beginner and experienced plant enthusiasts.
When it comes to caring for a moon cactus, it’s important to provide it with the right conditions. They prefer well-draining soil, so a cactus or succulent mix is ideal. Watering should be done sparingly, allowing the soil to dry out between waterings to prevent root rot. Overwatering can be detrimental to the health of the plant, so it’s best to err on the side of underwatering.
In terms of fertilization, moon cacti do not require frequent feeding. A diluted cactus fertilizer can be applied during the growing season, typically spring to summer, but it’s important not to overdo it. Too much fertilizer can lead to excessive growth, which may cause the scion to outgrow the host cactus.
Propagation of moon cacti can be a bit tricky, as the scion portion lacks chlorophyll and cannot produce its own food through photosynthesis. However, if the scion starts to decline or wither, it is possible to propagate the host cactus portion by removing the scion and rooting the base. This can be done by carefully cutting the scion off and allowing the cut end to callus over before planting it in well-draining soil.
Moon cacti are fascinating and visually appealing plants that add a touch of color and uniqueness to any collection. Whether you choose a red, orange, or yellow-topped variety, these grafted cacti are sure to be a conversation starter and a delightful addition to your indoor or outdoor space.
