Caryophyllaceae
Snow in summer
Cerastium tomentosum
- Family
- Caryophyllaceae
- Genus
- Cerastium
Pet and kid safety: not checked yet. Check pet-safe plants
Is yours looking unwell? Scan your plant — free
Common names
By language (22)
- arz
- السيراستيوم تومينتوسوم
- Belarusian
- Ясколка лямцавая
- Chinese
- 夏雪草, 绒毛卷耳
- Czech
- Rožec plstnatý
- Dutch
- Viltige hoornbloem
- English
- Snow in summer, Snow-in-summer
- Estonian
- Karvane kadakkaer
- Finnish
- Hopeahärkki
- French
- Céraiste cotonneux
- German
- Filziges Hornkraut
- Hungarian
- Molyhos madárhúr
- Icelandic
- Völskueyra
- Lithuanian
- Gauruotoji glažutė
- Norwegian Bokmål
- Filtarve
- Polish
- Rogownica kutnerowata
- Romanian
- Lâna caprelor
- Russian
- Ясколка войлочная
- Slovenian
- Polstena smiljka
- Swedish
- Silverarv
- Turkish
- Yaz Karı, Fare Kulağı
- Ukrainian
- Роговик повстяний
- Welsh
- Clust-y-llygoden y felin
Synonyms
- Alsine tomentosa (L.) E.H.L.Krause
- Cerastium album C.Presl
- Cerastium bosniacum G.Beck.
- Cerastium columnae Ten.
- Cerastium decalvans Schloss ex Nyman
- Cerastium elatum Ten
- Cerastium hybridum Schur
- Cerastium longifolium Ten.
- Cerastium repens L.
- Myosotis lanata Moench
Flowers
- In flower
- May to June (from 313 flowering iNaturalist observations worldwide)
Characteristics
- Growth habit
- Forb/herb
- Lifespan
- Annual
- In the US and Canada
- Alaska: introduced, Canada: introduced, Lower 48 states: introduced
Photos
FlowerPhoto: Michael, Antoni and Nihat Hinczewski, CC BY 4.0, from iNaturalist 
FlowerPhoto: Marcello Manara, CC BY 4.0, from iNaturalist 
FlowerPhoto: Jason Grant, CC BY 4.0, from iNaturalist 
Photo: No machine-readable author provided. Heron2 assumed, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Jacques Neuberg, CC BY 4.0, from iNaturalist 
Photo: Guérin Nicolas, CC BY-SA 3.0, from Wikimedia Commons Photo: Georges Olioso, CC BY-SA 4.0, from Pl@ntNet via GBIF 
Photo: Jason Grant, CC BY 4.0, from iNaturalist 
Photo: Guérin Nicolas, CC BY-SA 3.0, from Wikimedia Commons Photo: Pavel Kryka, CC BY-SA 4.0, from Pl@ntNet via GBIF 
Photo: Stephen James McWilliam, CC0, from iNaturalist 
Photo: Daderot, CC0, from Wikimedia Commons
More in Cerastium
- Sticky chickweedCerastium glomeratumCaryophyllaceae
- Field chickweedCerastium arvenseCaryophyllaceae
- Common mouse-ear chickweedCerastium fontanumCaryophyllaceae
- Alpine chickweedCerastium alpinumCaryophyllaceae
- Gray chickweedCerastium brachypetalumCaryophyllaceae
- Little mouse-earCerastium semidecandrumCaryophyllaceae
- European chickweedCerastium pumilumCaryophyllaceae
- Mouse-ear chickweedCerastium arcticumCaryophyllaceae
- Fourstamen chickweedCerastium diffusumCaryophyllaceae
- Boreal chickweedCerastium biebersteiniiCaryophyllaceae
- Cerastium sylvaticumCaryophyllaceae
- Cerastium latifoliumCaryophyllaceae
Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.