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Chinese Meadow-Rue
Thalictrum delavayi
Medium · Some experienceAbout Chinese Meadow-Rue
Chinese Meadow Rue is an elegant tall perennial from western China bearing airy panicles of nodding lavender-purple flowers with contrasting yellow stamens above delicate columbine-like foliage. Growing 4-6 feet tall, it blooms from midsummer into autumn and adds a gauzy see-through quality to shade borders. Hardy in USDA zones 4-7, it is a refined choice for woodland edges and naturalistic American gardens.
- Shade-tolerant
- Cold-hardy
- Deer-resistant
- Architectural
How to care for Chinese Meadow-Rue
Watering
- Springevery 5 days
- Summerevery 4 days
- Fallevery 7 days
- Winterpause watering
Soil · Well-draining
- Top dressingPine bark mulch10%
- Main mixPotting soil + perlite 2:170%
- DrainageLECA / gravel20%
Never skip the drainage layer — standing water is the top cause of root rot.
FERTILIZER
Balanced Feed 14-14-14
An even feed covers all three needs at once, keeping leaves, roots and blooms moving together with nothing pushed out of balance.
- Nitrogen · Leaves
- Phosphorus · Roots + Blooms
- Potassium · Strength
- Springevery 30 days
- Summerevery 30 days
At a Glance
- NativeEast Asia
- Height4–6 ft (1.2–1.8 m)
- Spread2–3 ft (0.6–0.9 m)
- Flower colorPurple, White
- Foliage colorGreen, Blue-green
- SoilLoamy, Moisture-retentive, Rich
- LocationsYard
Bloom time
BLOOM CYCLE
Peak bloom
Jul–Sep
Lavender-purple airy panicles July to September
Toxicity
Humans Moderate · Pets Moderate
protoanemonin and alkaloids
Moderate
- All
- Contact
- Ingestion
EXPOSURE Touching any part of the plant. Eating any part of the plant.
EFFECT Skin irritation, nausea, and vomiting.
NOTE Like other Ranunculaceae, contains irritant protoanemonin; handle with gloves.
Moderate
- All
- Ingestion
EXPOSURE Eating any part of the plant.
EFFECT Vomiting, diarrhea, and irritation.
NOTE Like other Ranunculaceae, contains irritant protoanemonin; handle with gloves.
Moderate
- All
- Ingestion
EXPOSURE Eating any part of the plant.
EFFECT Vomiting, diarrhea, and irritation.
NOTE Like other Ranunculaceae, contains irritant protoanemonin; handle with gloves.
Educational information, not medical or veterinary advice. If exposure is suspected, contact a doctor or veterinarian.
DISTRIBUTION
- Native
- Introduced
- East Asia
History
Thalictrum delavayi grows in moist woodland margins and mountain meadows of Yunnan and Sichuan provinces in southwestern China at 1800-3400m. French Jesuit missionary-botanist Jean-Marie Delavay collected thousands of specimens from Yunnan between 1882-1895; Adrien Franchet in Paris described this species in 1886 and named it in Delavay's honor. The plant reached European horticulture through Kew and rapidly became a favorite of Edwardian shade gardens for its cloud-like airy panicles of lavender flowers with contrasting cream stamens.
The double-flowered sterile cultivar 'Hewitt's Double', dating from around 1900, became especially prized. Later selections including 'Album' and 'Splendide' extended the range.
The plant is now a staple of naturalistic plantings by Piet Oudolf and other designers valuing texture. The cultivar 'Hewitt's Double' with fully double lavender flowers is a garden classic. A signature plant of Gertrude Jekyll's cottage border designs and contemporary American woodland gardens.
Symbolism & meaning
What It Symbolizes
Chinese Meadow-Rue embodies elegance, its delicate airy blooms held high above ferny foliage on tall, almost transparent stems. Refinement defines its presence — understated grace that softens the back of any perennial border without demanding the viewer's full attention. This is the meadow-rue for connoisseurs of restraint, a plant whose beauty lies precisely in its lightness, in flowers that seem to hover rather than insist on themselves.
- Elegance — delicate airy beauty in tall form
- Refinement — understated grace in the border
Where the Name Comes From
The name Chinese Meadow-Rue points to China. 'Thalictrum' is an ancient Greek name used by Dioscorides; 'delavayi' honors Père Delavay.
Uses & Fun Facts
- Chinese Meadow-Rue perennial used in cottage and naturalistic borders
Related plants
More Thalictrum plants
Plants with similar care
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Florida HobblebushAgarista populifolia
Shell GingerAlpinia zerumbet
Frequently asked questions
How often should I water Chinese Meadow-Rue?
Water about every 5 days during the growing season, and always let excess water drain away.
How much light does Chinese Meadow-Rue need?
Part shade: 2–4 hrs direct. Watch the leaves — scorching or stretching means the light needs adjusting.
Is Chinese Meadow-Rue toxic to cats or dogs?
Pets Moderate (Dogs Moderate · Cats Moderate) Educational information, not medical or veterinary advice. If exposure is suspected, contact a doctor or veterinarian.
Is Chinese Meadow-Rue easy to grow?
It is moderately demanding: a good choice once you have a little experience.
When does Chinese Meadow-Rue bloom?
It typically blooms Jul–Sep in the Northern Hemisphere.
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