Astrophytum myriostigma is found in Mexico in mountainous terrain at 6000' in altitude. This plant is basically globular, becoming more columnar with age. Spines are usually not present; rather the body is densely flocked with white "scales" which give the plant an overall silver or white appearance. Flowers are yellow and appear in summer. Astrophytums require bright light with ample airflow. It is essential that the soil is very porous, with excellent drainage, as can be achieved by the addition of extra pumice or perlite. Water thoroughly when dry during the active growing season. Protect from frost. Astrophytum are cactus but don't have spines. They will thrive in partial shade to full sun. Water sparingly and in winter keep dry at a temperature between 46-50 degrees F Astrophytum are cactus but don't have spines. They will thrive in partial shade to full sun. Water sparingly and in winter keep dry at a temperature between 46-50 degrees F