Emm's Plant House

Astrophytum asterias 8.5cm H12cm

£16.00 GBP

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Taxes included.

Pot Size 8.5cm H12cm

Quantity

Astrophytum asterias, known as the Sand Dollar Cactus or Star Cactus, is a spineless, round cactus with beautifully patterned ribs dotted with white flecks. Its neat symmetry and large yellow flowers make it a prized collector’s plant that thrives in bright, dry conditions.

Full Botanical Name: Astrophytum asterias
Common Names: Star Cactus, Sand Dollar Cactus, Sea Urchin Cactus
Country and/or Region of Origin: Southern Texas (USA) and Northeastern Mexico
Growing Conditions in Native Habitat: Dry, sandy flats and scrubland with intense sunlight and minimal rainfall

Care Guide

Care Guide:

Light: Full sun to bright, indirect light indoors

Ideal Room: Bright windowsill, greenhouse, or conservatory

Feeding: Dilute cactus fertilizer every 6–8 weeks in spring–summer

Humidity: Low; prefers arid air

Ideal Temperature: 20–30°C; keep above 10°C in winter

Watering: Water sparingly; allow soil to dry completely between waterings; avoid water sitting near the base

Pet/Child Safe: Non-toxic (genus level) — Astrophytum species are generally safe for pets and humans; spines (if present on young plants) can cause minor mechanical irritation

Soil Type: Very free-draining mineral mix (pumice, sand, and grit)

Propagation: Seeds; germinate in warm, bright conditions

Eventual Height and Spread: 2–6 cm tall; 6–10 cm wide

Growth Rate: Slow

Pests and Treatment: Mealybugs and root rot; avoid overwatering and treat pests with isopropyl alcohol

Repotting: Every 3–4 years in early spring

Pruning: Not required; remove old flowers after blooming

Air Purification: Minor; primarily ornamental

Folklore: Symbol of resilience and patience; believed to bring calm and order through its perfect symmetry

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