Proteaceae
Silkoak
Grevillea robusta
- Family
- Proteaceae
- Genus
- Grevillea
Pet and kid safety: not checked yet. Check pet-safe plants
Is yours looking unwell? Scan your plant — free
Common names
By language (29)
- Afrikaans
- Silwereik
- Arabic
- بلوط حريري
- arz
- بلوط حريرى
- Cantonese
- 銀樺
- Catalan
- Grevillea
- Chinese
- 銀樺, 银桦, 银桦树
- Czech
- Grevilea mohutná
- Dutch
- Australische zilvereik
- English
- Silkoak, Southern silky-oak, Silk oak, Silver oak
- Finnish
- Kultasilkkipuu
- German
- Australische Silbereiche
- Hebrew
- גרווילאה חסונה
- Japanese
- シルキーオーク, シルバーオーク
- Kannada
- ಸಿಲ್ವರ್ ಮರ
- Kinyarwanda
- Gereveliya, Gereverya
- Korean
- 우의목
- Malagasy
- Grevillea
- Malayalam
- സിൽവർ ഓക്ക്
- Manipuri
- ꯀꯧꯕꯤꯜꯂꯥ ꯄꯥꯝꯕꯤ
- Nepali
- काँगियो
- Persian
- بلوط ابریشمی
- Portuguese
- Grevílea-robusta, Grevílea, Grevílea robusta
- Russian
- Гревиллея крупная
- Slovenian
- Velika grevilka
- Spanish
- Gravillea
- Swedish
- Silvergrevillea
- Tamil
- மலைச் சவுக்கு, சில்வர் ஓக், வெள்ளோக்கு
- Tongan
- ʻOke
- Ukrainian
- Гревілея могутня
Synonyms
- Grevillea robusta var. forsteri L.H.Bailey
- Grevillea umbratica A.Cunn. ex Meisn.
- Grevillea venusta A.Cunn. ex Meisn.
- Stylurus robustus (A.Cunn.) O.Deg.
Flowers
- In flower
- October to November (from 137 flowering iNaturalist observations worldwide)
- Flower colour
- yellow (USDA PLANTS Database)
Characteristics
- Growth habit
- Tree
- Lifespan
- Perennial
- In the US and Canada
- Hawaii: introduced, Lower 48 states: introduced, Puerto Rico: introduced
Toxicity: Slight, as listed by the USDA PLANTS Database (2025-05-29). USDA rates how toxic a plant is to people or livestock; it is not a pet-safety rating, so ask a vet or poison line if a pet or child ate it.
Photos
FlowerPhoto: Roger Yandle, CC0, from iNaturalist 
FlowerPhoto: Shaun Swanepoel, CC BY 4.0, from iNaturalist 
FlowerPhoto: Carl Ramirez, CC BY 4.0, from iNaturalist 
FlowerPhoto: Klaus Wehrlin, CC0, from iNaturalist 
Photo: RickP 08:32, 14 April 2006, CC BY 2.5, from Wikimedia Commons 
Photo: Jane C Frost, CC BY 4.0, from iNaturalist 
Photo: Batsv, CC BY-SA 4.0, from Wikimedia Commons 
Photo: nebrooks, CC BY 4.0, from iNaturalist 
Photo: John Robert McPherson, CC BY-SA 4.0, from Wikimedia Commons 
Photo: zebedeugalinha, CC BY 4.0, from iNaturalist 
Photo: Bageense, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Lucas Christofides, CC BY 4.0, from iNaturalist
More in Grevillea
- KahiliflowerGrevillea banksiiProteaceae
- Grevillea juniperinaProteaceae
- Grevillea rosmarinifoliaProteaceae
- Alpine grevillieaGrevillea alpinaProteaceae
- Grevillea arenariaProteaceae
- Grevillea aspleniifoliaProteaceae
- Grevillea baileyanaProteaceae
- Fuchsia grevilleaGrevillea bipinnatifidaProteaceae
- Grevillea heliospermaProteaceae
- Grevillea ilicifoliaProteaceae
- Grevillea intricataProteaceae
- Grevillea lanigeraProteaceae
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.