Euphorbia polygona 'Snowflake'
Native range: Species from Eastern Cape, South Africa 
Known names: Snowflake Euphorbia, White African Milk Tree
Hardiness: USDA Zone 9b (25-30°F) to 11, protect from prolonged frost and freezing temperatures.
Mature Size: 1.5'-3' tall, 1'-2' wide (slow grower, typically adding 1"-3" per year)
Light: Half day sun - full sun
Water: Allow soil to dry completely between waterings; highly drought tolerant.
Soil: Extremely well-draining, gritty cactus and succulent mix.
Dormancy Period: Winter
Pet-Safe: No (contains toxic milky latex sap)
Plant Size: Grown in 4" pot, shipped bare root.
 
Euphorbia polygona 'Snowflake' is a columnar succulent that forms dense, ribbed stems heavily coated in a thick, powdery white farina (white waxy coating), giving the entire plant a frost-covered appearance. Newly emerging growth tips open with a pale green hue and tiny reddish cyathia (modified spiky leaves that encloses the flowers) buds before quickly developing the signature 'Snowflake' chalky-white coating as the stems mature. It branches readily from the base over time, forming an cluster of heavily ribbed, spiny columns with dark purple to black floral bracts. In cultivation, it requires a site with morning sun, half day sun, dappled light, for full sun. Requires extremely well-draining, gritty succulent mix. Its cultivar name 'Snowflake' refers to the chalky, brilliant white farina that blankets the ribbed stems, while the species name polygona derives from Greek roots meaning "many-angled," referencing its deeply ribbed stem structure.