Thalictrum sphaerostachyum (Meadow-rue) — herbaceous perennial

Overview

Thalictrum sphaerostachyum is a herbaceous perennial in the genus Thalictrum, part of the Ranunculaceae family. Thalictrum sphaerostachyum grows best in partial shade and shade, and tolerates moist and well-drained soils. Its UK hardiness is rated H5. Suggested uses include shade garden, woodland garden and naturalistic planting. It is native to North America.

About

Thalictrum sphaerostachyum is a herbaceous perennial in the buttercup family, notable for its finely divided leaves and sprays of many-stamened flowers. Leaves are compound and typically carry a blue-green cast. Flowering occurs from June to August, when open inflorescences appear above the foliage. It suits cooler, shaded or damp settings where such airy flowering can be displayed.

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 sphaerostachyum belongs to the genus Thalictrum within the Ranunculaceae and shares the genus tendency to produce bipinnate leaves and airy flower clusters. Members of this group are generally herbaceous perennials and are most often encountered in temperate, shaded or damp habitats. For siting, choose a position with shade or partial shade and reliable moisture; the species is typically associated with sheltered, damp locations rather than exposed, dry ground. Plants will show their flowers above the foliage from June to August, so allow space for the open sprays to rise clear of lower neighbours. In a mixed border set it where air can move through the stems to reduce prolonged damp on leaves. Use in the garden includes woodland margins, shaded borders and alongside streams or ponds where soil stays moist. Pair with perennials or grasses that occupy lower layers so the airy panicles remain visible. Pruning is minimal: remove dead stems in late winter or early spring to tidy the clump before new growth appears. Expect the species to contribute delicate foliage texture and a summer flowering display of long-stamened blooms during June to August.

Growing conditions

Best soil and position for Thalictrum

Sunlight: partial shade, shade
Soil type: moist, well-drained
Soil moisture: moist
Exposure: sheltered
UK hardiness: H5

Plant details

Thalictrum sphaerostachyum size, habit and characteristics

Plant type: herbaceous perennial
Suggested uses: shade garden, woodland garden, naturalistic planting
Native to: North America

Care notes

Pruning and caring for Thalictrum sphaerostachyum

Cultivation: Prefers cool, shaded or damp locations with moist, well-drained soil. Avoid dry or exposed sites.
Pruning: Cut back to ground level in late winter or early spring before new growth begins.
Propagation: Seed, division

Frequently asked questions

How do I grow Thalictrum sphaerostachyum?

Prefers cool, shaded or damp locations with moist, well-drained soil. Avoid dry or exposed sites.

Where is the best place to plant Thalictrum sphaerostachyum?

Thalictrum sphaerostachyum prefers partial shade and shade. It suits sheltered positions.

What soil does Thalictrum sphaerostachyum need?

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

How do I prune Thalictrum sphaerostachyum?

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

Is Thalictrum sphaerostachyum hardy in the UK?

Thalictrum sphaerostachyum 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 sphaerostachyum?

Seed, division.

More in the Thalictrum genus

Browse all Thalictrum →