Catevala atroviridis Medik.
Dark-green haworthia
Catevala atroviridis, synonym of Haworthia atroviridis Haw., is a rosulate succulent notable for the intense dark green ('atro-viridis' = blackish-green) color of its leaves, which contrast with the white markings on the underside. It is an uncommon species in cultivation but appreciated by collectors.
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Overview
| Category | Classification |
|---|---|
| Family | Asphodelaceae |
| Genus | Catevala |
| Growth Habit | Dense acaulescent rosette of very dark green color; slow growth. |
| Conservation Status | Not threatened. Uncommon in commercial cultivation. |
| pH Target | 6.0 – 7.0 |
| Type | Porous mix: 50% cactus substrate + 30% perlite + 20% coarse sand. |
Origin & Habitat
Morphology
Lanceolate leaves 5–9 cm, very dark green almost black on the upper surface, with contrasting white lines or tubercles on the underside.
ecoWhite tubular flowers with green nerves on scapes 25–40 cm.
ecoAcaulescent; tight rosette at ground level.
ecoDark fleshy roots with good water reserves.
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Requirements
Soil & Substrate
Type
Porous mix: 50% cactus substrate + 30% perlite + 20% coarse sand.
groups Beneficial Associations
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Propagation Strategy
- 1 Extract basal offsets with roots in spring.
- 2 Let cut dry 2 days.
- 3 Plant in porous substrate and water after one week.
Good diffuse light to maintain intense dark green color.
Too much darkness that will lighten the dark green color.
Every 3 years in spring.
Quarter-strength succulent fertilizer once in spring.
Uses & Applications
Precautions / Toxicity
Non-toxic to humans, dogs, and cats.
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Plant Health
Mealybugs; difficult to spot on very dark leaves.
Root rot from excess moisture.
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"Catevala atroviridis corresponds to Haworthia atroviridis Haw. The epithet 'atroviridis' (very dark green) is diagnostic; its intense pigmentation is related to high concentration of chlorophyll and anthocyanins to optimize photosynthesis under dense plant cover."
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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.