Catevala coarctata (Haw.) Kuntze
Compact dark-green haworthia
Catevala coarctata, synonym of Haworthia coarctata Haw., is a columnar succulent unusual in the genus for developing an upright stem 10–25 cm with densely imbricate spiraling leaves, creating very decorative dark green columns with white tubercles. It is one of the most cultivated columnar haworthias.
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Overview
| Category | Classification |
|---|---|
| Family | Asphodelaceae |
| Genus | Catevala |
| Growth Habit | Columnar; upright stem 10–25 cm densely covered with spirally imbricate leaves; branches at the base. |
| Conservation Status | Not threatened. One of the most cultivated columnar haworthias worldwide. |
| pH Target | 6.0 – 7.0 |
| Type | Cactus substrate with 25% perlite; deep pot with excellent drainage. |
Origin & Habitat
Morphology
Ovate-triangular leaves 2–4 cm, very dark green, densely imbricate spiraling around the stem forming columns; prominent white tubercles on the underside.
ecoWhite tubular flowers with green nerves on branched scapes 20–40 cm. Spring flowering.
ecoUpright stem 10–25 cm, branched at the base; unique columnar feature within the genus Haworthia.
ecoRobust fleshy roots that support the upright columnar habit.
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Requirements
Soil & Substrate
Type
Cactus substrate with 25% perlite; deep pot with excellent drainage.
groups Beneficial Associations
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Propagation Strategy
- 1 Cut a lateral branch 5–10 cm with healthy leaves.
- 2 Let cut dry 3–5 days until callus forms.
- 3 Plant in porous substrate and keep in shade without watering for 10 days.
- 1 Separate basal offsets with roots.
- 2 Let dry 2 days and plant in porous substrate.
Rotate the pot regularly to maintain straight columnar growth.
Unidirectional lighting that produces twisted columns.
Every 2–3 years in spring; use deeper pot each time.
Quarter-strength succulent fertilizer twice in spring-summer.
Uses & Applications
Precautions / Toxicity
Non-toxic to humans, dogs, and cats.
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Plant Health
Mealybugs between imbricate leaves; difficult to detect and treat; use systemic insecticide.
Stem base rot from water accumulation between dense leaves.
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"Catevala coarctata corresponds to Haworthia coarctata Haw. The term 'coarctata' (compressed, tightened) alludes to the densely imbricate leaves forming the column. It is taxonomically close to H. reinwardtii, differing in the larger size of the white tubercles on the underside."
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Scientific Integrity
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Sources
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Discussion
Disclaimer
This species record is provided for educational and informational purposes only. Jardín Roca Negra does not guarantee the accuracy or completeness of the data. Content is community-curated and may be subject to revision; it should not replace advice from a qualified botanist. This species may be toxic, invasive, or subject to legal restrictions — verify before handling or cultivating. Jardín Roca Negra accepts no liability for any harm arising from reliance on this information. Images are reproduced under Creative Commons or equivalent free licenses; credits are noted below each image.