Species

perennial

Delavay's Meadow Rue

The Story

Plant Bio

Thalictrum delavayi, or Yunnan meadow-rue, is an upright, clump-forming perennial with delicate, fern-like, blue-green foliage.

Known for its tall, wiry, dark purple stems that carry large, airy panicles of nodding, lilac-pink flowers with prominent creamy-yellow stamens.

Uses & Benefits:

Provides delicate texture and airy foliage that softens garden borders.

Prefers shaded areas, reducing the need for intense sun exposure.

Supports pollinators with early summer blooms and attracts beneficial insects.

SpeciesThalictrum delavayiChinese Meadow-Rue

Essentials

At a Glance

Plant Type

Perennial

Height

48 inches

Width

24 inches

Light

Partial Sun

Zones

4, 5, 6, 7

Water

Moderate

Humidity

Average

Lifespan

Perennial

Native To

China

Toxicity

All parts are toxic if ingested; may cause skin irritation.

Bloom period

Mid-summer – Late summer

In flower about 2 months of the year

Planting

How to Grow

Tuck seeds lightly into moist soil in early spring.
Water regularly to keep soil evenly moist during growing season.
Place in partial shade for best foliage development.
Apply a balanced fertilizer in early spring.
Mulch around base to retain moisture and suppress weeds.
Divide every 3–4 years in early spring for rejuvenation.

Pro Tip

Provide consistent moisture and partial shade for optimal growth.

Keep It Thriving

Care Guide

Do

Water regularly to keep soil moist 🌱
Mulch to conserve moisture and regulate soil temperature
Divide clumps every few years to prevent overcrowding

Don't

Avoid overwatering which can cause root rot ❌
Do not expose to full sun, which can scorch foliage
Refrain from heavy fertilizing late in the season

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Divide
Fertilize
Spring Cleanup
Stake

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Airy border plantShade garden accent

Companion Plants

Astilbe HostaFern LigulariaJapanese Painted Fern

Multiply

Propagation Methods

Good to Know

Common Questions

Delavay's Meadow Rue questions

What zones can Delavay's Meadow Rue grow in?

Delavay's Meadow Rue is hardy in USDA Zones 4–7. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Delavay's Meadow Rue deer resistant?

Yes — Delavay's Meadow Rue is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Delavay's Meadow Rue bloom?

Delavay's Meadow Rue typically blooms in mid-summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Delavay's Meadow Rue need full sun?

Delavay's Meadow Rue does best in part shade.