This perennial sub-shrub has an upright spreading fleshy pubescent stems that form a prostrate habit. It has hairy fleshy mid to dark green oval leaves and the bluish saucer-shaped flowers appear in small cluster during summer. 

Hardiness zones 9 to 11 

Tradescantia sillamontana is naturally found in northern Mexico growing in moist, well-drained fertile soils in a protected sunny position. 
 
White Velvet is a trailing perennial that is grown for its foliage and is planted in rockeries or containers and hanging baskets. It is also used as a ground cover establishing in 1 to 2 years from cuttings and in cold climates it is used as a glasshouse specimen. It suitable for small gardens or gully settings and is grown as a shade house specimen plant. ID 1815

Tradescantia (tră-des-KĂNT-ee-a) sillamontana (si-la-mon-TAH-na)

Commelinaceae (ko-mel-ih-NAY-see-ee)
Spiderwort Family