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Family: Asteraceae (ass-ter-AY-see-ay) (Info)
Genus: Achillea (ak-ih-LEE-a) (Info)
Species: ptarmica (TAR-mik-uh) (Info)
Cultivar: The Pearl
 2 vendors have this plant for sale.
One member has or wants 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)
Sun Exposure:
Full Sun
Danger:
Unknown - Tell us
Bloom Color:
White/Near White
Bloom Time:
Late Summer/Early Fall
Foliage:
Herbaceous
Other details:
Average Water Needs; Water regularly; do not overwater
Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Propagation Methods:
By dividing the rootball
Seed Collecting:
Unknown - Tell us
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| By Weezingreens
 By dceldridge
 By Gabrielle
 By Gabrielle
 By kniphofia
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Profile:4 positives
2 neutrals
No negatives
Gardeners' Notes:
| Rating |
Author |
Comment |
| Positive |
lmelling |
On Dec 23, 2004, lmelling from Ithaca, NY
(Zone 5b) wrote:A popular and easy to grow perennial, which can be of great value to those who dry flowers for arrangements. The plant has small, white, double flowers in profusion on long, 2'-3' stems that bloom throughout the summer.
To sow from seed: sow in late spring to flower the following year. It can spread rapidly, so give it space in the middle or back of a border. It likes full sun or partial shade in hotter areas and well-drained soil. Suceptible to mildew and may need to be treated during the summer.
To dry: cut when the flowers are well open but before the oldest flowes on the stem start to show signs of browning. Rain can damage the quality of the flowers, so cut back poor quality stems and wait for a second flush. Hang upside down in a warm (not hot) place with good air circulation. Drying too fast at high temps can cause browning, but drying too slowly may result in color loss on the stems and leaves and give a less fresh appearance. |
| Positive |
ceceoh |
On May 12, 2005, ceceoh from Columbus, OH
(Zone 6a) wrote:This plant was a volunteer in my garden last year, and it was a beauty, growing in the midst of my obedient plants and rubeckia. Those little white flowers just glow!
I looked for it this year and have found one sprout coming up, which isn't too bad considering how bad a spreader it is supposed to be. |
| Neutral |
dceldridge |
On Jun 23, 2005, dceldridge from Shepherdstown, WV
(Zone 6b) wrote:It does make a good cutting for filling in an arrangement. It grows easily in eastern WV and spreads very readily (perhaps a negative if you are not careful). I do not water it and it grows in a clay soil. |
| Positive |
Gabrielle |
On Jan 16, 2006, Gabrielle from Washington, IL
(Zone 5a) wrote:I've read that this is not supposed to spread as much as other yarrows, but it does like to spread. I have to constantly pull it back. It would likely be better behaved if it was in poorer soil. It does bloom over a long span of time. When it starts looking bad, I cut it back, and it grows back and reblooms.
I have read that it is hardy in zones 2-10. Light aids germination of seeds. |
| Positive |
whitehorserayne |
On Aug 21, 2006, whitehorserayne from Whitehorse
() wrote:A friend gave me two of these plants last year, this year they turned in to a mass! I live in the Yukon in Canada, Zone 3, and apparently they are very happy here. |
| Neutral |
berrygirl |
On Mar 18, 2007, berrygirl from Braselton, GA
(Zone 7b) wrote:ACHILLEA Ptarmica THE PEARL Medium 2' - Plant 14" apart. Larger, double white pearl shaped flowers.
General Information
Very similar in appearance to Baby's Breath - open and airy. Likes a well drained soil. Spreads to fill in.
(FROM BLUESTONE)
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Regional...This plant has been said to grow in the following regions: Seward, Alaska
Seymour, Connecticut
Washington, Illinois
Red Wing, Minnesota
Clinton Corners, New York
Columbus, Ohio
Kalama, Washington
Shepherdstown, West Virginia
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