Astrophytum Asterias

Astrophytum asterias. also known as the sand dollar cactus or sea urchin cactus. is a unique and fascinating species native to Mexico. Here are some care tips for this cactus:
 
Light:
Astrophytum asterias thrives in full. direct sunlight. Provide at least 6-8 hours of bright sunlight per day. In hot climates. some afternoon shade can be beneficial.
 
Soil:
Use a well-draining cactus or succulent potting mix. You can amend the soil with additional perlite. pumice. or coarse sand to improve drainage. Good drainage is crucial for this species.
 
Water:
Water sparingly. allowing the soil to completely dry out between waterings. During the growing season (spring and summer). water when the soil is completely dry. In winter. reduce watering to once a month or less.
 
Temperature:
Astrophytum asterias prefers warm temperatures between 70°F and 90°F (21°C to 32°C) during the growing season. In winter. it can tolerate cooler temperatures down to around 50°F (10°C). but no colder.
 
Humidity:
This cactus prefers low humidity levels. so it's well-suited for dry indoor environments.
 
Repotting:
Repot every 2-3 years in the spring. using a slightly larger pot and fresh cactus soil mix. Be gentle with the roots as they are brittle.
 
Fertilizer:
During the growing season. you can feed with a balanced. diluted cactus fertilizer every 4-6 weeks.
 
Be patient with the growth of this slow-growing cactus. and avoid overwatering. which can lead to root rot. With proper care. the Astrophytum asterias can live for many years and develop its distinctive star-shaped appearance.