Thalictrum, Crowfoot, Rue Anemone, Windflower, Wood Anemone 'Betty Blake'

Thalictrum thalictroides

Family: Ranunculaceae (ra-nun-kew-LAY-see-ee) (Info)
Genus: Thalictrum (tha-LIK-trum) (Info)
Species: thalictroides (thal-ik-TROY-deez) (Info)
Cultivar: Betty Blake
Synonym:Anemonella thalictroides

Category:

Perennials

Water Requirements:

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

Sun Exposure:

Light Shade

Foliage:

Herbaceous

Smooth

Foliage Color:

Unknown - Tell us

Height:

12-18 in. (30-45 cm)

Spacing:

3-6 in. (7-15 cm)

Hardiness:

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

Danger:

Parts of plant are poisonous if ingested

Handling plant may cause skin irritation or allergic reaction

Bloom Color:

White/Near White

Bloom Characteristics:

Unknown - Tell us

Bloom Size:

Unknown - Tell us

Bloom Time:

Mid Spring

Other details:

Unknown - Tell us

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:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

From seed; direct sow outdoors in fall

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

Seed Collecting:

Allow seedheads to dry on plants; remove and collect seeds

Regional

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

Saint Louis, Missouri

Gardeners' Notes:

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2
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RatingContent
Neutral

On Jul 28, 2014, coriaceous from ROSLINDALE, MA wrote:

The flowers are fully and consistently double. They are often described as "green". Pale chartreuse is closer to the mark.

It grows 8-10" tall and wide.

Like most native spring ephemerals, this wants moist soil in the spring and will go dormant when the trees leaf out and suck the moisture from the soil. It doesn't need moist soil when dormant.

Armitage gives its hardiness range as Z4-9.

The common name is rue-anemone.

I can find no primary sources using the other names described above as synonyms. "Wood anemone" is Anemone nemorosa. "Windflower" refers either to Anemone nemorosa or the entire genus Anemone. Wikipedia gives seven different taxa that are sometimes called "crowfoot", but does not include Anemonella/T... read more

Neutral

On Apr 21, 2011, Terri1948 from Yorkshire,
wrote:

I would describe the flowers on mine as pale lemon yellow, rather than white.

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