Poaceae
Redtop
Agrostis gigantea
- Family
- Poaceae
- Genus
- Agrostis
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Common names
By language (29)
- Arabic
- نجير عملاق, أغروستيس عملاق, النجير العملاق
- arz
- اغروستيس عملاق
- Bulgarian
- Гигантска полевица
- Chinese
- 巨序剪股穎, 巨序剪股颖, 小糠草, 巨穗剪股颖
- Czech
- Psineček veliký
- Danish
- Stortoppet Hvene
- Dutch
- Hoog struisgras
- English
- Redtop, Black bent
- Estonian
- Suur kastehein
- Finnish
- Isorölli
- German
- Riesen-Straussgras, Riesen-Straußgras, Riesenstraussgras, Fioringras
- Hebrew
- נחלית גבוהה
- hsb
- Hoberska wjechelca
- Igbo
- Black bent, Redtop
- Irish
- Feorainn dhubh
- Japanese
- コヌカグサ
- Latvian
- Lielā smilga
- Lithuanian
- Didžioji smilga
- Norwegian Bokmål
- Storkvein
- nv
- Tłʼohlátah yíchiiʼí
- Persian
- علف بوریای غولآسا
- Polish
- Mietlica olbrzymia, Mietlica biaława
- Romanian
- Iarba câmpului, Iarba cîmpului
- Russian
- Полевица гигантская
- Slovak
- Psinček obrovský
- Slovenian
- Orjaška šopulja
- Swedish
- Storven
- Ukrainian
- Мітлиця велетенська
- Welsh
- Maeswellt mawr
Synonyms
- Agrostis alba f. aristata Fernald
- Agrostis alba subsp. gigantea (Roth) Arcang.
- Agrostis alba var. compressa Bréb.
- Agrostis alba var. diffusa (Host) Asch. & Graebn.
- Agrostis alba var. gigantea (Roth) Lej.
- Agrostis alba var. major Gaudin
- Agrostis alba var. vulgaris G.Mey.
- Agrostis signata var. gigantea (Roth) Schur
- Agrostis stolonifera Leers
- Agrostis stolonifera subsp. gigantea (Roth) Beldie
- Agrostis stolonifera subsp. gigantea (Roth) Schübl. & G.Martens
- Agrostis stolonifera var. flagellare Neilr.
- Agrostis stolonifera var. gigantea (Roth) Rchb.
- Agrostis stolonifera var. gigantea (Roth) Bréb.
- Agrostis stolonifera var. gigantea (Roth) Koch
- Agrostis stolonifera var. linosa (Schur) Schur
- Agrostis stolonifera var. rothii Heuff.
- Agrostis vinealis var. gigantea (Roth) Willd.
- Vilfa gigantea (Roth) P.Beauv.
Flowers
- In flower
- June to August (from 23 flowering iNaturalist observations worldwide)
- Flower colour
- yellow (USDA PLANTS Database)
Characteristics
- Growth habit
- Graminoid
- Lifespan
- Perennial
- In the US and Canada
- Alaska: introduced, Canada: introduced, Greenland: introduced, Lower 48 states: introduced
Photos
FlowerPhoto: Darius Regnier, CC0, from iNaturalist 
FlowerPhoto: Sam Kieschnick, CC BY 4.0, from iNaturalist 
FlowerPhoto: panickedpopcorn, CC BY 4.0, from iNaturalist 
Photo: Kristian Peters -- Fabelfroh 07:06, 19 August 2007, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Brett Sandford, CC BY 4.0, from iNaturalist 
Photo: Kristian Peters -- Fabelfroh 07:07, 19 August 2007, CC BY-SA 3.0, from Wikimedia Commons 
Photo: pippo pippo, CC BY-SA 4.0, from Pl@ntNet via GBIF 
Photo: Joe Potter Butler, CC BY 4.0, from iNaturalist 
Photo: Stefan.lefnaer, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Renée-Louise Lamontagne, CC BY-SA 4.0, from Pl@ntNet via GBIF 
Photo: Chris R., CC0, from iNaturalist 
Photo: Stefan.lefnaer, CC BY-SA 4.0, from Wikimedia Commons
More in Agrostis
- Creeping bentAgrostis stoloniferaPoaceae
- Colonial bentgrassAgrostis capillarisPoaceae
- Velvet bentAgrostis caninaPoaceae
- Brown bentgrassAgrostis vinealisPoaceae
- BentgrassAgrostis castellanaPoaceae
- Rough bentgrassAgrostis scabraPoaceae
- Agrostis rupestrisPoaceae
- Clavate bentgrassAgrostis clavataPoaceae
- Northern bentgrassAgrostis mertensiiPoaceae
- Agrostis nebulosaPoaceae
- Spike bentgrassAgrostis exarataPoaceae
- Agrostis pourretiiPoaceae
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.