Mammillaria karwinskiana Mesemb It is primarily a winter

It is primarily a winter grower so it likes more water then

They are shown  growing in a 3

Plants can be grown with roots raised (giving a bonsai or caudiciform look) or below soil level (giving a pin cushion look)

The leaves are a beautiful ghostly white color with bluish to pinkish highlights

The flowers are reddish

Mammillaria karwinskiana Mesemb It is primarily a winterMammillaria karwinskiana Family: Cactaceae. A nice green bodied species with white to yellow tufts of hair when mature. This species is noted for its long curved spines. They aren't that long yet but as the plant matures the new spines will get consistently longer. Flowers are yellow and produced throughout the growing season. Mature plants can be 5" or more in diameter and may form clumps in time. Takes normal cactus care. Protect from frost. You