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PlantFiles: Sneezewort, Sneezeweed, Brideflower
Achillea ptarmica

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Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Achillea (ak-ih-LEE-a) (Info)
Species: ptarmica (TAR-mik-uh) (Info)

3 members have or want this plant for trade.

Category:
Perennials

Height:
24-36 in. (60-90 cm)

Spacing:
18-24 in. (45-60 cm)

Hardiness:
USDA Zone 3a: to -39.9 C (-40 F)
USDA Zone 3b: to -37.2 C (-35 F)
USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)
USDA Zone 10a: to -1.1 C (30 F)

Sun Exposure:
Full Sun

Danger:
Handling plant may cause skin irritation or allergic reaction

Bloom Color:
White/Near White

Bloom Time:
Mid Summer
Late Summer/Early Fall

Foliage:
Herbaceous

Other details:
May be a noxious weed or invasive
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:
Non-patented

Propagation Methods:
By dividing the rootball
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; sow indoors before last frost
From seed; direct sow after last frost

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds
Properly cleaned, seed can be successfully stored
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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There are a total of 9 photos.
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Profile:

2 positives
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive mybrigadoon On Nov 3, 2009, mybrigadoon from Devon, PA wrote:

I have grown this, 'the 'pearl' cultivar, in Margate, NJ, it has been wonderful, blooms mid summer to Sept., and is not invasive at all. It is a very nice filler for the perrenial bed.

Neutral pokerboy On Mar 24, 2005, pokerboy from Canberra
Australia (Zone 8b) wrote:

This is the parent plant of the cultivar " The Pearl". pokerboy.

Positive Weezingreens On Aug 13, 2002, Weezingreens from Seward, AK (Zone 3b) wrote:

Achillea ptarmica grows quite well in our cool climate in Alaska. It actually prefers poor soil. Though it's blooms are quite beautiful, resembling little roses, it can be extremely invasive if sharing a garden bed.

Regional...

This plant has been said to grow in the following regions:

Seward, Alaska
Boise, Idaho
Margate City, New Jersey
Brooklyn, New York



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