RN-ADR-00002

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DocumentedCommonly cultivated

Adromischus cooperi (Baker) A.Berger

Plover Eggs Plant

Adromischus cooperi, the Plover Eggs Plant, is one of the most decorative Adromischus thanks to its mottled leaves with purple-brown spots on a green background, mimicking the camouflage pattern of a plover's egg. It is native to quartzite rocks in the Robertson and Worcester region of South Africa's Western Cape.

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height

Height

5–12 cm

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Watering

Every 14–21 days in summer; every 5–6 weeks in winter

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Sunlight

5–7 hours direct sun

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Temperature

Optimal 8–28 °C; minimum -2 °C briefly

Family

Crassulaceae

Genus

Adromischus

Conservation Status

Not formally assessed; restricted distribution in southwestern South Africa; locally scarce on Fynbos quartzite outcrops.

Growth Habit

Small compact rosette plant 5–12 cm; slow branching from base; very short stem.

Overview

Category	Classification
Family	Crassulaceae
Genus	Adromischus
Growth Habit	Small compact rosette plant 5–12 cm; slow branching from base; very short stem.
Conservation Status	Not formally assessed; restricted distribution in southwestern South Africa; locally scarce on Fynbos quartzite outcrops.
pH Target	5.5 – 6.5
Type	Quartzitic, acidic to neutral, ultra-poor, no water retention.

Origin & Habitat

Native Region

Cabo Oriental, Sudáfrica

Ecosystem

Scrubland and rocky outcrops; subtropical biome of the Eastern Cape

Morphology

Leaves

Oblong-clavate leaves 3–5 cm long, flattened on the upper face and convex below; grey-green surface densely mottled with irregular purple, brown, or violet spots; no farina; firm consistency.

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Stem

Very short stem (1–4 cm), compact, slowly producing lateral offsets over years.

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Flowers

Tubular flowers white to cream with pink or violet streaks, 1.2–1.8 cm; erect spike 15–25 cm; summer flowering (December–February in southern hemisphere).

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Roots

Shallow fibrous root system; adapted to very thin quartzite soils with minimal moisture retention.

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Requirements

Light

Full sun; the absence of farina makes leaves more sensitive to sunburn if acclimated gradually; slow transition is essential.

Watering

Very sparse; every 14–21 days in summer; every 5–6 weeks in winter; near-zero water in winter dormancy.

Temperature

Optimal 8–28 °C; tolerates brief frosts to -2 °C; sensitive to combination of humidity and cold.

Soil

Ultra-mineral; 70% inert materials (crushed quartzite, perlite, sand); 30% cactus compost; driest in the genus.

Recommended Substrate

Soil & Substrate

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pH Target 5.5 – 6.5

Type

Quartzitic, acidic to neutral, ultra-poor, no water retention.

groups Beneficial Associations

Adromischus maculatusHaworthia pygmaeaConophytum bilobumTitanopsis calcarea.

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Propagation Strategy

Leaf Cuttings Medium

Season: Spring–Summer Rooting: 4–6 weeks

Success Rate 60–70%

1 Select a healthy silver-spotted tubular leaf of A. cooperi; pull gently in a spiral motion until it separates cleanly from the stem
2 Rest the leaf in a dry, lightly shaded spot for 2–3 days to allow the base to callous
3 Lay the leaf on mineral substrate (quartz sand + perlite) without burying it; the silver spots should remain visible
4 Mist the substrate lightly once a week until roots and basal shoots appear in 4–6 weeks

Seeds Hard

Season: Spring Rooting: 2–4 weeks to germinate

Success Rate 35–45%

1 Distribute seeds on fine sandy mix without covering; moisten with a mister
2 Cover with transparent film or glass and place at 21–24 °C in bright indirect light
3 Germination occurs in 2–4 weeks; gradually ventilate before removing the cover
4 Transplant seedlings to individual pots when they reach 1–2 cm

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Key Tip

The tubular leaves can store water; space waterings well to avoid internal rot

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Common Mistake

Watering frequently before the substrate dries completely

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Repotting

Every 2–3 years in spring, at the start of the active growing season.

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Fertilizer

Half-strength succulent or cactus fertilizer once in spring and once in summer; no fertilizer in winter.

Uses & Applications

Uses

Miniature succulent collectioncollector terrariumsartistic botanical photography.

Parts Used

Leaves (slower propagation than A. cristatus)seeds.

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Precautions / Toxicity

No toxicity reported; safe for humans and pets; no known irritant compounds.

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science

"The leaf mottling of A. cooperi may have cryptic function against herbivores: the irregular spot distribution mimics lichen patterns on Cape quartzites, camouflaging the plant against the rocky substrate. Field herbivory studies have confirmed that more heavily mottled specimens suffer less browsing damage."

Researcher Notes — RN-ADR-00002

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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.