Photo by Melody

PlantFiles: False Rue Anemone
Isopyrum biternatum

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Family: Ranunculaceae (ra-nun-kew-LAY-see-ee) (Info)
Genus: Isopyrum (eye-so-PYE-rum) (Info)
Species: biternatum (by-TER-nat-um) (Info)

Synonym:Enemion biternatum

Category:
Perennials

Height:
6-12 in. (15-30 cm)

Spacing:
6-9 in. (15-22 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:
Light Shade

Danger:
Unknown - Tell us

Bloom Color:
White/Near White

Bloom Time:
Unknown - Tell us

Foliage:
Herbaceous

Other details:
Requires consistently moist soil; do not let dry out between waterings

Soil pH requirements:
4.6 to 5.0 (highly acidic)
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)

Patent Information:
Non-patented

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

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By MN_Darren
Thumbnail #1 of Isopyrum biternatum by MN_Darren

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Thumbnail #3 of Isopyrum biternatum by TomH3787

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Thumbnail #6 of Isopyrum biternatum by Cville_Gardener

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Thumbnail #7 of Isopyrum biternatum by Weerobin

Profile:

2 positives
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive Malus2006 On Feb 18, 2008, Malus2006 from Coon Rapids, MN (Zone 4a) wrote:

A intresting little plant that will spreads well into a clump and prefer woodland shade but is very difficult to find in the plant trade. That's unfortune since it is a very lovely delicate - looking plant that blooms in the spring. To me it is easy to tell from rue anemone since for some reason rue anemone in my yard bloom pink not white. It is more of a clump former than rue anemone since rue anemone tend to spread itself all over the place.

Neutral frostweed On Nov 22, 2006, frostweed from Josephine, Arlington, TX (Zone 8a) wrote:

False Rue Anemone Isopyrum biternatum is native to Texas and other States.

Positive MN_Darren On May 27, 2004, MN_Darren from Saint Paul, MN wrote:

Easy to grow. It spreads slowly underground, and reseeds a bit. It likes acidic conditions, but my thriving clump is in neutral soil. The white flowers are quite early--about the time of Bloodroot, and continue coming for the entire month of May. The seeds are difficult to catch before the plant catapults them from its tri-lobed seed pod. The fine, reddish shoots emerge very early, so be careful when cleaning up Winter's mess in their vicinity.

Regional...

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

Louisville, Kentucky
North Billerica, Massachusetts
Grand Rapids, Michigan
Minneapolis, Minnesota
St Paul, Minnesota
Glendale, Missouri
Leesburg, Virginia



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