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Description
Grusonia Aggeria, commonly known as Agger’s cholla or club cholla, is a cactus species that belongs to the Opuntioideae subfamily. It is native to the southwestern United States and northern Mexico, where it grows in arid and semi-arid regions. This cactus species is named after its discoverer, Otis Warren Agger, who found it in Arizona in the 1950s.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Tracheophyta |
| Class | Magnoliopsida |
| Order | Caryophyllales |
| Family | Cactaceae |
| Genus | Grusonia |
Appearance
Grusonia Aggeria is a small cactus that grows up to 30 cm tall and 20 cm wide. It has a green, cylindrical stem that is covered in spines, which can be up to 5 cm long. The stem segments are roughly triangular, with rounded edges. This cactus species has small, yellowish-green flowers that bloom in late spring and early summer. The flowers are followed by red or green fruits that are edible but not commonly eaten.
Care Guide
Grusonia Aggeria is a hardy cactus that requires minimal care. Here are some guidelines to help you keep it healthy:
- Water: Water your cholla sparingly, allowing the soil to dry out completely between waterings. Avoid overwatering, as this can lead to root rot.
- Fertilization: Fertilize your cholla once a month during the growing season (spring and summer) with a balanced fertilizer. Do not fertilize during the dormant season (fall and winter).
- Soil: Use a well-draining soil mix that is specifically formulated for cacti and succulents.
- Sunlight: Place your cholla in a bright, sunny location with at least 6 hours of direct sunlight per day. Avoid placing it in a location that receives direct afternoon sun, as this can scorch the plant.
- Hardiness Zones: Grusonia Aggeria is hardy in USDA Zones 9 to 11.
Common Pests & Diseases
Grusonia Aggeria is generally resistant to pests and diseases. However, here are some issues that you may encounter:
- Scale insects: These small, oval-shaped insects can attach themselves to the stem and suck the sap out of the plant. You can remove them by rubbing them off with a cotton swab dipped in alcohol.
- Root rot: Overwatering can lead to root rot, which can cause the plant to wilt and eventually die. To prevent this, make sure the soil is completely dry before watering and avoid getting water on the stem.
Habitat
Grusonia Aggeria is native to the southwestern United States (Arizona, California, Nevada) and northern Mexico (Sonora). It grows in arid and semi-arid regions, typically in rocky or sandy soils.
Question and Answer
Q: Is Grusonia Aggeria a good plant for beginners?
A: Yes, Grusonia Aggeria is a good plant for beginners because it is hardy and requires minimal care.
Q: Can I propagate Grusonia Aggeria from cuttings?
A: Yes, you can propagate Grusonia Aggeria from cuttings. Allow the cutting to callus over for a few days before planting it in well-draining soil.
Q: Is Grusonia Aggeria toxic to pets?
A: While Grusonia Aggeria is not considered toxic to pets, the spines can cause injury if ingested or touched.
Q: How often should I repot my Grusonia Aggeria?
A: You should repot your Grusonia Aggeria every 2-3 years, or when it outgrows its current pot.
Related Plants
- Grusonia parishii (Parish’s cholla)
- Grusonia pulchella (Diamond cholla)
- Grusonia schottii (Schott’s cholla)
References
- “Grusonia Aggeria.” Cactus Art Nursery. https://www.cactus-art.biz/schede/GRUSONIA/Grusonia_aggeria/Grusonia_aggeria/Grusonia_aggeria.htm
- “Grusonia Aggeria.” World of Succulents. https://worldofsucculents.com/grusonia-aggeria-agger-cholla-club-cholla/
- “Grusonia Aggeria.” Dave’s Garden. https://davesgarden.com/guides/pf/go/54292/
