The Threetooth ragwort (Packera tridenticulata)is a fully hardy perennial deciduous forb/subshrub/herb with yellow flowers in late Summer. It grows well in semi-shade, and prefers medium levels of water. This plant requires a minimum of 100 frost free days to grow successfully. It has average drought tolerance.
Packera tridenticulata grows in soils ranging from a pH of 5 (extremely acidic ranges from 0 to 5.1) to 7.5 (neutral ranges from 6.6 to 7.5). It is adapted to clay, silt, sand, loam, silty clay, sandy clay, clay loam, silt loam, sandy loam, loamy sand, silty clay loam and sandy clay loam soils, and prefers medium fertility.
This is a erect plant and has a multiple stem growth form, and has an ultimate height of 0.9m / 3ft.
The leaves are green in Summer.
Very resistant to fire.
Fruit and seed
There is a medium fruit/seed abundance beginning in Spring and ending in Summer.
Propagation techniques include bare root and seed.-23°C / -9.4F to 0.9m / 3ft
|Scientific classifications [Edit]|
|Specific epithet ?||tridenticulata|
|Threetooth ragwort (United States)|
References  ?
Plant added by plantdatabase
Helenium is called 'Sneezeweed', not because it's pollen causes sneezing, but because the crushed leaves were used as snuff.
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