Definition

Noun: 1. A low-growing, mat-forming perennial plant: Snow-in-summer is the common name for Cerastium tomentosum, a garden plant known for its dense, silvery-grey, hairy foliage and its profusion of small, star-shaped, pure white flowers that bloom in late spring and early summer, creating an appearance reminiscent of a light snowfall. 2. An annual spurge plant: Snow-in-summer is also a common name for Euphorbia marginata, an erect annual plant native to North America, notable for its showy flower clusters with white-margined bracts (modified leaves) that give the plant a frosted or snow-dusted appearance.

Usage Examples

• Referring to the perennial ground cover:
  • We planted snow-in-summer along the edge of the path for its silvery foliage.
  • The rock garden is beautifully covered in a blanket of snow-in-summer in June.
• Referring to the annual spurge:
  • The wildflower meadow included patches of snow-in-summer, its white-bracted stems standing out against the green.
  • Caution is advised as all parts of this type of snow-in-summer are toxic.

Advanced Usage

• The name is a descriptive compound noun based on the plant's visual characteristics (white flowers or bracts that resemble snow) and its typical blooming season (summer). It is primarily used in horticultural, botanical, and gardening contexts.
• Note on Ambiguity: Because "snow-in-summer" refers to two distinct botanical species, context is crucial for clarity. Often, the perennial is the intended meaning in general gardening discussions.

Variants and Related Words

• Cerastium tomentosum: The botanical/Latin name for the perennial ground cover species.
• Euphorbia marginata: The botanical/Latin name for the annual spurge species.
• Ghostweed: Another common name for .
• Tomentose: (Adjective) Covered with dense, matted, woolly hairs. This describes the foliage of .

Synonyms

• For : Dusty miller (though this name can refer to other silvery plants), woolly mouse-ear chickweed.
• For : Smoke-on-the-prairie, variegated spurge.

Important Note

• Toxicity Warning: (the annual spurge) contains a milky, latex sap that is a severe irritant to skin and eyes and is poisonous if ingested. Always handle with care and keep away from children and pets. is not known to be toxic.

Noun

1. chickweed with hairy silver-grey leaves and rather large white flowers
2. annual spurge of western United States having showy white-bracted flower clusters and very poisonous milk