string of buttons Crassula perforata Type:houseplantssucculents & cactus Hardiness:Zone 9 – 11 Mature Height:8-12in Light:part to full sun (6 hours or more sun) Water:drought tolerant once establishedsucculent/requires very little water Bloom Color:white Foliage:green Description Pale green leaves grow in a spiral around each stem. This South Africa native makes a great low maintenance container houseplant.