Agastache occidentalis
- Families: Lamiaceae Nepetoideae Mentheae
- English name: Western giant-hyssop
- Plant ID : 1076
- Author : (Charles Vancouver Piper (1867-1926)) Amos Arthur Heller (1867-1944)
- Zone : California
- Biological type : plant
- Adult size (h x w) : 1,64f x 1,64f
- Sun exposure : full sun
- Evergreen : deciduous
- Growth : average
- Hardiness : 10,4°F
- Leaf color : dark green
- Flower color : violet
- Formerly of wild origin : yes
- Native : no
- In danger : no
- Edible : no
- Precipitation : < 500mm
- FrostResistance >-5°C : yes
- FrostResistance >-8°C : yes
- FrostResistance >-12°C : yes