Achnatherum calamagrostis
- Families: Poaceae Pooideae Stipeae
- English name: Spear grass
- Plant ID : 7585
- Author : (Carl von Linné (1707-1778)) Ambroise Marie François Joseph Palisot de Beauvois (1752-1820)
- Zone : Mediterranean
- Biological type : grass
- Adult size (h x w) : 4,92f x 1,31f
- Sun exposure : part sun
- Evergreen : evergreen
- Growth : average
- Hardiness : 5°F
- Leaf color : dark green
- Flower color : yellow
- Formerly of wild origin : no
- Native : yes
- In danger : no
- Edible : no
- Precipitation : > 900mm
- FrostResistance >-5°C : yes
- FrostResistance >-8°C : yes
- FrostResistance >-12°C : yes
- Gravelly soil : very much
- Sandy soil : very much
- Limestone soil : very much