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Description
Cephalocereus is a genus of cactus that belongs to the family Cactaceae. It is native to Mexico and is commonly known as the Mexican giant cardon. The genus comprises 11 species, including the Cephalocereus senilis or the old man cactus, which is a popular ornamental plant. Cephalocereus is characterized by its tall and columnar stem that can grow up to 60 feet tall. The stem is ribbed and has spines that can range from tiny to large and sharp. The flowers of Cephalocereus are usually white or pink and bloom at night.
Taxonomic Information
| Domain | Eukaryota |
|---|---|
| Kingdom | Plantae |
| Phylum | Tracheophyta |
| Class | Magnoliopsida |
| Order | Caryophyllales |
| Family | Cactaceae |
| Genus | Cephalocereus |
Appearance
Cephalocereus is a tall and columnar cactus that can grow up to 60 feet tall. The stem of the plant is ribbed and has spines that can range from tiny to large and sharp. The stem is green when young and turns grayish-brown as it ages. The stem can also develop a woody texture as it matures. The flowers of Cephalocereus are usually white or pink and bloom at night. The fruit of the plant is edible and can be used to make jams and jellies.
Care Guide
Cephalocereus is a low-maintenance plant that is easy to care for. Here are some tips on how to take care of your Cephalocereus:- Water: Cephalocereus does not require frequent watering. Water the plant only when the soil is completely dry. Overwatering can cause the plant to rot.- Fertilization: Fertilize the plant once every two months during the growing season with a cactus fertilizer.- Soil: Use a well-draining soil mix that is specifically formulated for cacti and succulents.- Sunlight: Cephalocereus thrives in full sun to partial shade. Make sure to provide the plant with plenty of bright, indirect light.- Hardiness Zones: Cephalocereus can tolerate temperatures as low as 20 degrees Fahrenheit and is hardy in USDA zones 9 to 11.
Common Pests & Diseases
Cephalocereus is generally resistant to pests and diseases. However, here are some common issues that you may encounter:- Scale insects: These small, oval-shaped insects can attach themselves to the stem and suck the sap from the plant. Use an insecticidal soap to get rid of them.- Root rot: Overwatering can cause the roots of the plant to rot. Make sure to let the soil dry out completely before watering again.- Sunburn: Cephalocereus can get sunburned if exposed to too much direct sunlight. Move the plant to a shadier spot if you notice any signs of sunburn.
Habitat
Cephalocereus is native to Mexico and can be found in arid regions. The plant thrives in hot and dry conditions and can tolerate temperatures as low as 20 degrees Fahrenheit.
Question and Answer
Q: Is Cephalocereus a good plant for beginners?
A: Yes, Cephalocereus is a low-maintenance plant that is easy to care for and is a good choice for beginners.
Q: Can I propagate Cephalocereus?
A: Yes, Cephalocereus can be propagated by stem cuttings. Let the cuttings dry out for a few days before planting them in well-draining soil.
Q: How often should I water my Cephalocereus?
A: Water your Cephalocereus only when the soil is completely dry. Overwatering can cause the plant to rot.
Q: Can Cephalocereus be grown indoors?
A: Yes, Cephalocereus can be grown indoors as long as it is placed in a bright spot with plenty of indirect sunlight.
Related Plants
Here are some related plants to Cephalocereus:- Echinocactus grusonii- Ferocactus latispinus- Gymnocalycium mihanovichii- Mammillaria elongata- Opuntia ficus-indica
References
– “Cephalocereus.” The Cactus Family. Accessed 14 August 2021. https://cactiguide.com/cactus/?genus=Cephalocereus- “Cephalocereus senilis.” Missouri Botanical Garden. Accessed 14 August 2021. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=292935- “Mexican Giant Cardon.” World of Succulents. Accessed 14 August 2021. https://worldofsucculents.com/mexican-giant-cardon-cephalocereus-senilis/
