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Foamflower 'Iron Butterfly'


Family: Saxifragaceae (saks-ih-frag-AY-see-ee) (Info)
Genus: Tiarella (tee-uh-RELL-a) (Info)
Cultivar: Iron Butterfly
Additional cultivar information:(PP12396)
Hybridized by Heims
Registered or introduced: 1999
View this plant in a garden




12-18 in. (30-45 cm)


12-15 in. (30-38 cm)


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)

Sun Exposure:

Light Shade

Partial to Full Shade

Bloom Color:

Pale Pink

Bloom Time:

Mid Spring

Late Spring/Early Summer


Grown for foliage


Other details:

Unknown - Tell us

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Patent Information:


Propagation Methods:

By dividing the rootball

Seed Collecting:

Unknown - Tell us

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us


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

Clayton, California

San Leandro, California

Barnesville, Georgia

Barrington, Illinois

Mount Prospect, Illinois

Delphi, Indiana

Springville, Iowa

Mashpee, Massachusetts

Hopkins, Minnesota

Freehold, New Jersey

Cary, North Carolina

Wilkes Barre, Pennsylvania

Murfreesboro, Tennessee

Mc Kinney, Texas

Lexington, Virginia

Kalama, Washington

Stanwood, Washington

show all

Gardeners' Notes:


On Apr 19, 2012, ms_greenjeans from Hopkins, MN (Zone 4a) wrote:

Got one, loved it, got another, and so on. I now have a dozen or more after about 3 years - great shade plant, beautiful foliage, and lots of fragrant flowers all summer long if you faithfully deadhead it.


On Nov 22, 2009, bonehead from Cedarhome, WA (Zone 8b) wrote:

What child of the 60s can resist the name...?? And, fragrant flowers to boot. Very nice mounding plant, easily divided in spring to increase the effect. I get heavy blooms May-June, then sporadically all summer.


On Jun 20, 2007, entwive from Barrington, IL (Zone 5a) wrote:

A good rebloomer with large fragrant flowers (if you crouch way down).


On Jun 20, 2003, Terry from Murfreesboro, TN (Zone 7a) wrote:

New plant for me this year, but off to a very promising start. Potted up when it arrived a few weeks ago from Park Seed; it had nicely filled out the 4" pot and was blooming when I set it out.


On Apr 5, 2003, violabird from Barnesville, GA (Zone 8a) wrote:

Planted last fall, in deep humusy soil, it sure didn't disappoint me with the featherly light pink flowers, and finely cut, veined, maple-leaf like leaves. Bloom for in my 7b garden started April 1.