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Description
Sclerocactus Johnsonii, also known as Johnson’s fishhook cactus, is a species of cactus native to the southwestern United States, particularly Arizona and Utah. This small cactus typically grows to be only a few inches tall and wide, with a cylindrical shape and numerous spines. In the spring, the plant produces vibrant pink or purple flowers that are quite striking.
Taxonomic Information
| Domain | Eukarya |
|---|---|
| Kingdom | Plantae |
| Phylum | Tracheophyta |
| Class | Magnoliopsida |
| Order | Caryophyllales |
| Family | Cactaceae |
| Genus | Sclerocactus |
| Species | Sclerocactus Johnsonii |
Appearance
Sclerocactus Johnsonii is a small, cylindrical cactus with numerous spines. The plant typically grows to be only a few inches tall and wide, with a greenish-gray coloration. In the spring, the plant produces vibrant pink or purple flowers that are quite striking. The flowers are funnel-shaped and can be up to 2 inches in diameter. The plant’s spines are typically white or yellow and can grow up to an inch long.
Care Guide
To care for Sclerocactus Johnsonii, it is important to provide the plant with well-draining soil and plenty of sunlight. The plant is quite hardy and can tolerate a range of temperatures and soil types, but it is important to make sure the soil is not too wet. Water the plant sparingly, only when the soil is completely dry. Fertilize the plant once a month during the growing season with a cactus-specific fertilizer. Sclerocactus Johnsonii is hardy in USDA Hardiness Zones 8-10.
Common Pests & Diseases
Sclerocactus Johnsonii is susceptible to a range of pests and diseases, including mealybugs, spider mites, and root rot. To prevent pests, regularly inspect the plant and use an insecticidal soap if necessary. To prevent root rot, make sure the soil is well-draining and do not over-water the plant.
Habitat
Sclerocactus Johnsonii is native to the southwestern United States, particularly Arizona and Utah. The plant typically grows in rocky or sandy soil in desert environments. The plant is well-adapted to hot, dry conditions and can tolerate a range of temperatures.
Question and Answer
Q: How often should I water Sclerocactus Johnsonii?
A: Water the plant sparingly, only when the soil is completely dry.
Q: What kind of fertilizer should I use for Sclerocactus Johnsonii?
A: Use a cactus-specific fertilizer and fertilize the plant once a month during the growing season.
Q: What are some common pests that affect Sclerocactus Johnsonii?
A: Mealybugs and spider mites are common pests that can affect Sclerocactus Johnsonii.
Q: What is the hardiness zone for Sclerocactus Johnsonii?
A: Sclerocactus Johnsonii is hardy in USDA Hardiness Zones 8-10.
Related Plants
- Sclerocactus Blainei
- Sclerocactus Brevispinus
- Sclerocactus Closteri
References
- “Sclerocactus johnsonii.” Cactus and Succulent Society of America, 2021.
- “Sclerocactus johnsonii.” Arizona-Sonora Desert Museum, 2021.
- “Sclerocactus johnsonii.” World of Succulents, 2021.
