Thalictrum Species, Early Meadow-Rue, Early, Dioecious Meadow Rue, Quicksilver Weed

Thalictrumdioicum

Family
Ranunculaceae (ra-nun-kew-LAY-see-ee)
Genus
Thalictrum (tha-LIK-trum)
Species
dioicum (dy-oh-EE-kum)
Synonym
Leucocoma dioica
Thalictrum laevigatum
Thalictrum pauciflorum
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Herbaceous
Smooth
Height
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
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)
Bloom Color
Pale Yellow
White/Near White
Bloom Time
Mid Summer
Other Details
Category
Perennials
Water Requirements
Requires consistently moist soil; do not let dry out between waterings
Foliage Color
Blue-Green
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
Soil pH requirements
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information
Non-patented
Propagation Methods
By dividing the rootball
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors
Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
Regional

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

Sebastopol, California

Geneva, Illinois

Warren, Indiana

Iowa City, Iowa

Royal Oak, Michigan

Minneapolis, Minnesota

Frenchtown, New Jersey

Brooklyn, New York

Buffalo, New York

Leesburg, Virginia

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Gardener's Notes:

2
positives
1
neutral
0
negative
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G
Geneva, IL | April 2012 | positive

Plant is growing in my yard 20 feet from a river. Looks like a columbine in early spring then it sends up a strong tall (compared to a co...Read More

M
Coon Rapids, MN (Zone 4a) | March 2006 | positive

Early meadowrue is a plant that is rarely seen in the plant market, even native nurseries. This is a small plant, for me rarely growing ...Read More

T
St. John's, NL (Zone 5b) | February 2005 | neutral

This species is a common wildflower along damp to wet areas of Newfoundland. They grow in bogs, fens, streamsides, pond margins. Foliag...Read More

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