Cacalia haworthii Sweet
Woolly groundsel
Shrubby succulent with fleshy stems densely coated in white woolly tomentum. Its cylindrical leaves are entirely white due to dense hair covering, giving it a uniquely wintry appearance. Blooms with small yellow composite flower heads typical of Asteraceae.
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© Meneerke bloem, CC BY-SA 3.0, via Wikimedia Commons
Overview
| Category | Classification |
|---|---|
| Family | Asteraceae |
| Genus | Cacalia |
| Growth Habit | Succulent subshrub |
| Conservation Status | Least Concern |
| pH Target | 6.0–7.5 |
| Type | Sandy-gritty with excellent drainage |
Origin & Habitat
Requirements
Soil & Substrate
Type
Sandy-gritty with excellent drainage
groups Beneficial Associations
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Propagation Strategy
T
E
Every 2–3 years or when roots fill the pot.
Diluted cactus fertilizer once in spring and once in summer.
Uses & Applications
Precautions / Toxicity
Slightly toxic if ingested; may cause digestive irritation in pets.
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"'Cacalia haworthii' Sweet is the historical name. The currently accepted name is 'Caputia tomentosa' (Haw.) B.Nord. & Pelser (formerly also known as 'Senecio haworthii'). The genus Caputia was segregated from Senecio in 2016 to accommodate several cottony African kleinias."
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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.