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The Walking Crow's Guide to Plants and Gardening

Astroworthia is a genus of hybrid succulent plants, resulting from the cross between Astroloba and Haworthia.

  • Genus: hybrid Astroworthia
  • Species: Several cultivars exist, each with distinct features and often named after their breeders or discoverers, like ‘Towering Inferno’ and ‘Bicarinata.’
  • Growing Zone: Zones 9-11.
  • Origin: While a hybrid, its parent genera are native to South Africa, specifically the arid regions of the Western and Eastern Cape.
  • Toxicity: Astroworthias are generally non-toxic to humans and pets. However, as a precautionary measure, it’s advisable to keep them out of reach of children and animals who may be tempted to ingest them.
  • Health Benefits: Although they don’t possess any specific health benefits, like many succulents, they contribute to a healthier indoor environment by absorbing carbon dioxide during photosynthesis.
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  • Soil: Thrives in well-draining soil, such as a cactus or succulent mix. Ensure proper drainage to prevent root rot.
  • Sunlight: Requires ample sunlight. Aim for at least 6 hours of bright, indirect light or partial sun per day. Insufficient light may cause etiolation (stretching and legginess).
  • Water: Drought-tolerant and prefers infrequent watering. Allow the soil to dry out completely between waterings. Overwatering is detrimental and can lead to root rot.
  • Temperature: Tolerates a range of temperatures but prefers warm conditions. Protect from frost.
  • Fertilizer: Light feeders. Fertilize once or twice during the growing season (spring and summer) with a diluted, balanced liquid fertilizer or a specialized succulent fertilizer.
  • Pruning: Minimal pruning needed. Remove any dead or damaged leaves.
  • Propagation: Can be propagated from offsets (pups) or leaf cuttings.
  • Astroworthias are relatively slow-growing and compact, suitable for small spaces or containers.
  • They exhibit a fascinating array of forms, inherited from both parent genera, with textures ranging from smooth to rough and colors varying from green to reddish hues.
  • Some cultivars produce attractive flowers, typically in spring or summer.
  • They are susceptible to mealybugs and scale insects. Regular inspection and prompt treatment are recommended.

In Columbus, Georgia: Astroworthias can be grown outdoors year-round, enjoying the abundant sunlight. However, provide some protection from intense afternoon sun during peak summer and safeguard them from frost during occasional winter dips.

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