Thalictrum Species, Dwarf Meadow Rue, Kyoshu Meadow Rue

Thalictrum kiusianum

Family: Ranunculaceae (ra-nun-kew-LAY-see-ee) (Info)
Genus: Thalictrum (tha-LIK-trum) (Info)
Species: kiusianum (key-oo-see-AY-num) (Info)
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Water Requirements:

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

Sun Exposure:

Partial to Full Shade


Grown for foliage


Foliage Color:



6-12 in. (15-30 cm)


12-15 in. (30-38 cm)


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)

Where to Grow:

Unknown - Tell us


Unknown - Tell us

Bloom Color:


Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Bloom Size:

Unknown - Tell us

Bloom Time:

Late Spring/Early Summer

Other details:

Unknown - Tell us

Soil pH requirements:

5.1 to 5.5 (strongly acidic)

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

Patent Information:

Unknown - Tell us

Propagation Methods:

By dividing the rootball

From seed; winter sow in vented containers, coldframe or unheated greenhouse

From seed; stratify if sowing indoors

Seed Collecting:

Unknown - Tell us


This plant is said to grow outdoors in the following regions:

Palmer, Alaska

Mount Prospect, Illinois

Minneapolis, Minnesota

Saint Paul, Minnesota

Saint Louis, Missouri

Lake Grove, New York

Salem, Oregon

Wilkes Barre, Pennsylvania

Lexington, Virginia

Seattle, Washington

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Gardeners' Notes:


On Jun 7, 2012, jrtinker from Palmer, AK (Zone 3b) wrote:

This has been a very hardy little gem for me, surviving 14 Alaskan winters. The leaves look like a dwarf Epimedium until the charming pink flowers appear. The only challenge has been keeping the airborne weed seeds from destroying the effect, especially grass.

The roots make tiny potato-like storage bodies that may make propagation easier than some suggest. It does increase only slowly.


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

Zone 4a hardy - they're more commonly sold those days - but can be frustrated to grow - taller plants or weeds love to overtake them in my yard but have a interesting relationship in one area with some pussytoes - actually last year (2007) the meadowrue seem to be driving the pussytoes back in an spot that got a shot of direct full every day so shade and some sun plants mix together! Woodland shade. Good plants for shade rock gardens.


On May 25, 2004, MN_Darren from Saint Paul, MN wrote:

Among the short species of Thalictrum, this one is the most beautiful and well-behaved. First the bad news: it's hard to find and expensive. It grows fairly slowly, creeping underground and almost never reseeding. Now the good news: It has beautiful, long lasting flowers similar to the T. aquilegiafolium. It's really short--like 3", so it works very well for alpine gardens, among low growing, non-invasive plants. I can imagine using them in very formal situations, or as a ground cover among Oriental lilies or Spring bulbs, but I have not gotten a significant volume of them yet. In Minnesota, don't expect to see Spring shoots until Mid-May. They are small and fragile, so mark the area, but be prepared for several inches of movement. Don't let anything crowd them out.


On Jun 22, 2002, Baa wrote:

Rhizomatous perennial from Japan.

Has rounded, 3-5 lobed, dark blue-green leaflets. Bears loose corymbs of a few, tiny, pale mauve/pink flowers which gives the appearance of a small powderpuff.

Flowers May-July

Needs a cool, moist, fertile, acid peat soil in partial shade. Flowers best in regions where the Spring and Summer is cool and damp.

Has been quite hardy here so far....


On Mar 19, 2001, Terry from Murfreesboro, TN (Zone 7a) wrote:

Mounds of basal foliage resemble Maidenhair fern. In early summer, lavender flowers appear to float above the foliage.

Great for woodland settings, creeps slowly to fill in.