Ageratina altissima
- Families: Asteraceae Asteroideae Eupatorieae
- English name: White Snakeroot
- Plant ID : 7521
- Author : (Carl von Linné (1707-1778)) Robert Merrill King (1930-) & Harold Ernest Robinson (1932-)
- Zone : California
- Biological type : plant
- Adult size (h x w) : 3,28f x 1,31f
- Sun exposure : part sun
- Evergreen : evergreen
- Growth : fast
- Hardiness : 19,4°F
- Leaf color : bright green
- Flower color : white
- Formerly of wild origin : no
- Native : no
- In danger : no
- Edible : no
- Precipitation : > 900mm
- FrostResistance >-5°C : yes