Haworthia 'Grey Ghost'

From http://www.cactuscollection.com:

Haworth...Read Moreia retusa, native to Cape Province, South Africa, forms clusters of shiny, star-shaped green rosettes. Leaves are thickened and triangular, slightly recurved at tips. The top surface is smooth, with nearly translucent "windows" and veining. Sometimes confused with Haworthia turgida. Haworthias are winter growers and are dormant in the hottest summer months. Require very porous soil with excellent drainage as many forms have thickened tap roots. Prefer filtered, bright light. Those species with red veining or chocolate faces will exhibit superior color in bright light. All forms that are green, especially included the variegated forms, will prefer filtered light. Water thoroughly when soil is dry to the touch. Protect from frost.