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Description
Selenicereus is a genus of cactus that includes around 20 species. It is native to Central and South America and is known for its large, showy flowers that bloom at night. These cacti can grow up to 15 feet tall and have long, thin stems that can climb or trail. Selenicereus is a popular choice for indoor and outdoor gardens due to its unique appearance and stunning blooms.
Taxonomic Information
| Domain | Eukaryota |
|---|---|
| Kingdom | Plantae |
| Phylum | Tracheophyta |
| Class | Magnoliopsida |
| Order | Caryophyllales |
| Family | Cactaceae |
| Genus | Selenicereus |
Appearance
Selenicereus cacti have long, thin stems that can grow up to 15 feet tall. The stems are covered in small, fine spines and can climb or trail depending on the species. The flowers of Selenicereus are large and showy, with a diameter of up to 1 foot. They bloom at night and are typically white or yellow, although some species may have pink or red blooms. The flowers are followed by small, edible fruits that are often red or orange.
Care Guide
Selenicereus cacti are relatively easy to care for, but they do have specific needs. Here are some tips for caring for your Selenicereus:- Water: Selenicereus cacti prefer well-draining soil and should be watered thoroughly but infrequently. Water once every 2-3 weeks, allowing the soil to dry out completely between waterings.- Fertilization: Fertilize your Selenicereus cactus once a month during the growing season (spring and summer) with a balanced fertilizer.- Soil: Selenicereus cacti prefer well-draining soil that is slightly acidic. Use a cactus mix or create your own by mixing sand, perlite, and peat moss.- Sunlight: Selenicereus cacti prefer bright, indirect sunlight. Avoid placing them in direct sunlight, as this can scorch the stems.- Hardiness Zones: Selenicereus cacti are native to tropical regions and are not frost tolerant. They thrive in USDA Hardiness Zones 10-12.
Common Pests & Diseases
Selenicereus cacti are relatively pest and disease resistant, but they can still be affected by a few common issues. Here are some things to watch out for:- Scale insects: These small, brown insects can be found on the stems and leaves of Selenicereus cacti. They can be removed by wiping them off with a cloth soaked in rubbing alcohol.- Mealybugs: These white, cottony insects can be found on the stems and leaves of Selenicereus cacti. They can be removed by wiping them off with a cloth soaked in rubbing alcohol.- Root rot: Overwatering can cause root rot in Selenicereus cacti. Symptoms include yellow or brown leaves and a mushy stem. To prevent root rot, make sure the soil is well-draining and allow it to dry out completely between waterings.
Habitat
Selenicereus cacti are native to Central and South America, where they are found in tropical rainforests and other humid environments. They are epiphytic, meaning they grow on other plants and use them for support. In cultivation, Selenicereus cacti are often grown on trellises or other support structures.
Question and Answer
Q: How often should I water my Selenicereus cactus?
A: Water your Selenicereus cactus once every 2-3 weeks, allowing the soil to dry out completely between waterings.
Q: Can I grow Selenicereus cacti indoors?
A: Yes, Selenicereus cacti can be grown indoors as long as they receive bright, indirect sunlight.
Q: How big do Selenicereus cacti get?
A: Selenicereus cacti can grow up to 15 feet tall, depending on the species.
Q: Are Selenicereus cacti toxic to pets?
A: Selenicereus cacti are not known to be toxic to pets.
Related Plants
– Epiphyllum- Hylocereus- Rhipsalis- Schlumbergera
References
– “Selenicereus.” Wikipedia, Wikimedia Foundation, 14 May 2021, en.wikipedia.org/wiki/Selenicereus.- “Selenicereus.” Missouri Botanical Garden, www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=c615.
