Euphorbia marginata, commonly known as Snow-on-the-Mountain, is an annual herb native to prairies, plains, and meadows in temperate North America. It has been naturalized in China. This plant typically grows to a height of 1-3 feet (30-90 cm) and spreads 0.5-2 feet (15-60 cm) wide. It features grey-green leaves with white-margined bracts that surround small, inconspicuous white flowers, blooming from mid-summer to early fall. The variegated foliage is often more noticeable than the flowers and adds a striking contrast to garden settings.

Euphorbia marginata is valued for its distinctive foliage, which can brighten up floral arrangements and garden beds. It is commonly used in borders, as a bedding plant, and in wildflower gardens. This species prefers full sun and can tolerate a range of soil types, provided they are well-drained. It is drought-tolerant once established and requires minimal maintenance, making it a suitable choice for xeriscaping. However, gardeners should handle this plant with care, as the sap can cause skin irritation. It is potentially invasive outside its native range, so it is essential to consult local guidelines before planting.CC BY-SA 4.0