Sand Dollar Cactus "Astrophytum asterias"
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Description
Astrophytum asterias, also known by its common name ‘Sand Dollar Cactus’, is a small, spineless cactus with a solitary spherical, apically depressed dark green stem with 8 ribs and woolly areoles. The stem grows up to 2.4 inches in diameter. Flowers are yellow with orange-red centers, up to 3 inches in diameter, and appear in the spring. They are followed by green, pink, or grayish-red fruits covered with dense wooly hairs. This summer-growing species has its origin in Texas & Mexico and belongs to the Cactus family.
Size:
Flowering Size
Care Instructions:
Astrophytums like dry conditions with sporadic watering in the summer and then a dry winter. During the growing season, water infrequently. Fertilize with a balanced fertilizer during the growing season. Requires well-draining soil that allows roots to grow and air to circulate. A hole in the bottom of the pot is highly recommended to allow excess water to escape. They like hot temperatures above 70 ˚F during the summer and prefer cooler, more temperate winters. USDA hardiness zones 9a to 11b: from 20°F to 50°F. This plant requires very sunny conditions, with hours of direct sunlight every day.
Propagation:
They propagate by seed, and their seeds are fairly fragile: be gentle with them before planting. They also have a relatively short shelf life and must be sown quickly after harvesting to have a reasonable rooting chance. When sowing them, ensure they are in well-aerated soil, then seal the newly planted seeds to help catch moisture and heat. It can help to soak seeds before they are sown.
