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{{SPlantbox
| name = ''Achillea ptarmica''
|familia=Asteraceae
| common_names = Sneezewort
|genus=Achillea
| growth_habit = ? <!--- tree, shrub, herbaceous, vine, etc -->
|species=ptarmica
| high = ? <!--- 1m (3 ft) -->
|common_name=Sneezewort, Sneezeweed, Bastard Pellitory, European Pellitory, Etc.
| wide = <!--- 65cm (25 inches) -->
|name_ref=Wikipedia
| origin = ? <!--- Mexico, S America, S Europe, garden, etc -->
|habit=herbaceous
| poisonous = <!--- indicate parts of plants which are known/thought to be poisonous -->
|habit_ref=Flora - A Gardener's Encyclopedia
| lifespan = <!--- perennial, annual, etc -->
|Max ht box=30
| exposure = ? <!--- full sun, part-sun, semi-shade, shade, indoors, bright filtered (you may list more than 1) -->
|Max ht metric=in
| water = ? <!--- frequent, regular, moderate, drought tolerant, let dry then soak -->
|height_ref=Flora - A Gardener's Encyclopedia
| features = <!--- flowers, fragrance, fruit, naturalizes, invasive -->
|Max wd box=30
| hardiness = <!--- frost sensitive, hardy, 5°C (40°F), etc -->
|Max wd metric=in
| bloom = <!--- seasons which the plant blooms, if it is grown for its flowers -->
|width_ref=Flora - A Gardener's Encyclopedia
| usda_zones = ? <!--- eg. 8-11 -->
|exposure=sun
| sunset_zones = <!--- eg. 8, 9, 12-24, not available -->
|sun_ref=Flora - A Gardener's Encyclopedia
| color = IndianRed
|features=flowers, ground cover
|flower_season=early summer, mid summer, late summer
|flower_ref=Flora - A Gardener's Encyclopedia
| image_caption = <!--- eg. Cultivated freesias -->
|flowers=white
| regnum = Plantae
|Temp Metric=°F
| divisio = Magnoliophyta
|min_zone=6
| classis = Magnoliopsida
|usda_ref=Flora - A Gardener's Encyclopedia
| ordo = Asterales
|max_zone=10
| familia = Asteraceae
|image=Sneezewort (Achillea ptarmica).jpg
| genus = Achillea
|image_width=240
| species = ptarmica
}}
}}
'''''Achillea ptarmica''''' ('''Sneezewort''', '''Sneezeweed''', '''Bastard Pellitory''', '''European Pellitory''', '''Fair-maid-of-France''', '''Goose Tongue''', '''Sneezewort Yarrow''', '''Wild Pellitory''', '''White Tansy''').
'''''Achillea ptarmica''''' ('''Sneezewort''', '''Sneezeweed''', '''Bastard Pellitory''', '''European Pellitory''', '''Fair-maid-of-France''', '''Goose Tongue''', '''Sneezewort Yarrow''', '''Wild Pellitory''', '''White Tansy''') is a species in the genus ''[[Achillea]]''. It has loose clusters of white, button-like [[flower]]s that bloom from June to August. Its dark green [[Leaf|leaves]] have finely-toothed margins.
This is a hardy, drought-tolerant plant that prefers full sun and moist but well-drained [[soil]].
The name ''ptarmica'' comes from the [[Greece|Greek]] word ''ptairo'' (=sneeze) and means 'causes sneezing'.
Like many other plants, the sneezewort's pattern of development displays the [[Fibonacci number|Fibonacci sequence]].<ref name="Britton">{{cite web |url= http://britton.disted.camosun.bc.ca/fibslide/jbfibslide.htm |title= Fibonacci Numbers in Nature |author= Jill Britton |format= [[html]] |date= 7 May 2005 |quote= }}</ref>
The plant is poisonous to cattle, sheep, and horses.
{{Inc|
{{Inc|
Achillea ptarmica, Linn. (A. macrocephala, Pill. & Mitterb.). Sneezewort. Height 1-2 ft.: lvs. serrate: fls. in loose corymbs; all summer. North temperate regions.— Its full-double var. The Pearl (Fig. 104) is much used for cut-flowers and in cemeteries, and is one of the most popular of all hardy herbaceous plants. There are many other varieties.{{SCH}}
Achillea ptarmica, Linn. (A. macrocephala, Pill. & Mitterb.). Sneezewort. Height 1-2 ft.: lvs. serrate: fls. in loose corymbs; all summer. North temperate regions.— Its full-double var. The Pearl is much used for cut-flowers and in cemeteries, and is one of the most popular of all hardy herbaceous plants. There are many other varieties.{{SCH}}
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