Thalictrum delavayi (Chinese meadow rue) — herbaceous perennial

Overview

Thalictrum delavayi is a herbaceous perennial in the genus Thalictrum, part of the Ranunculaceae family. It typically grows around 1.2 metres tall. Thalictrum delavayi grows best in full sun and partial shade, and tolerates well-drained and fertile soils. Its UK hardiness is rated H5. Suggested uses include borders, cottage gardens and naturalistic plantings. It is native to China Tibet.

About

Thalictrum delavayi is a herbaceous perennial that reaches about 1.2 metres and flowers from June to August. Native to China and Tibet, it performs well in full sun or partial shade on fertile, well‑drained soil that remains moist. It is classed H5 (hardy) in the UK; contact with the foliage may irritate the skin, so wear gloves and other protective equipment when handling. Suitable uses include borders, cottage gardens and naturalistic plantings.

Wikipedia contributors, CC BY-SA 4.0 — Thalictrum delavayi

About the genus

Thalictrum is a genus of 120–200 species of herbaceous perennial flowering plants in the buttercup family, Ranunculaceae, native mostly to temperate regions. Meadow-rue is a common name for plants in this genus.

Wikipedia contributors, "Thalictrum", CC BY-SA 4.0 — Thalictrum

In the garden

Thalictrum delavayi is a herbaceous perennial from China and Tibet that grows to roughly 1.2 metres and flowers from June to August. As a taller herbaceous element it brings vertical summer presence where a mid- to back-of-border height is required. Choose a site in full sun or partial shade with fertile, well‑drained soil that will not dry out; the plant prefers consistently moist conditions rather than drought-prone positions. It is rated H5, which in plain terms means it is hardy in UK gardens under typical winter conditions for hardy perennials. In practice it suits mixed borders, cottage garden layouts and naturalistic plantings where a taller, flowering perennial is needed for summer structure. Do not overlook the safety note: contact with the foliage may irritate the skin, so wear gloves and other protective equipment when handling the plant.

Growing conditions

Best soil and position for Thalictrum

Sunlight: full sun, partial shade
Soil type: well-drained, fertile
Soil moisture: moist
UK hardiness: H5

Plant details

Thalictrum delavayi size, habit and characteristics

Plant type: herbaceous perennial
Height: 1.2 metres
Suggested uses: borders, cottage gardens, naturalistic plantings
Native to: China Tibet
Toxicity: Contact with foliage may irritate the skin. Wear gloves and other protective equipment when handling

Care notes

Pruning and caring for Thalictrum delavayi

Cultivation: Prefers moist, well-drained soil in full sun or partial shade. Avoid waterlogged conditions.
Pruning: Cut back to ground level in late winter or early spring before new growth begins.
Propagation: Seed, division in spring

Frequently asked questions

How do I grow Thalictrum delavayi?

Prefers moist, well-drained soil in full sun or partial shade. Avoid waterlogged conditions.

Where is the best place to plant Thalictrum delavayi?

Thalictrum delavayi prefers full sun and partial shade.

What soil does Thalictrum delavayi need?

Thalictrum delavayi grows best in well-drained and fertile soil. Aim for soil that stays moist.

How do I prune Thalictrum delavayi?

Cut back to ground level in late winter or early spring before new growth begins.

How big does Thalictrum delavayi grow?

Thalictrum delavayi reaches a height of 1.2 metres.

Is Thalictrum delavayi hardy in the UK?

Thalictrum delavayi has an RHS hardiness rating of H5, meaning it is hardy in most of the UK, tolerating -15 to -10°C.

How do I propagate Thalictrum delavayi?

Seed, division in spring.

Is Thalictrum delavayi toxic?

Contact with foliage may irritate the skin. Wear gloves and other protective equipment when handling.

More in the Thalictrum genus

Browse all Thalictrum →