Thalictrum 'Hewitt's Double'

Thalictrum delavayi 'Hewitt's Double': Lavender Mist, Feathered Elegance

Soft as a summer haze, Thalictrum 'Hewitt's Double' sends up tall, graceful stems topped with clouds of fully double, lavender-pink flowers from midsummer into early fall. Each bloom resembles a miniature pom-pom, floating above lacy blue-green foliage that adds a fine-textured, fern-like backdrop. Despite its delicate appearance, this double meadow rue is a strong vertical presence in the garden, adding height, motion, and a romantic quality to lightly shaded borders and naturalistic plantings.

Plant Characteristics:

• Height: 120–150 cm
• Spread: 60–75 cm
• Flower Colour: Soft lavender-pink, fully double
• Flowering Period: Midsummer to early fall
• Foliage: Lacy blue-green, finely divided, upright
• Sunlight Requirements: Part sun to part shade
• Soil Requirements: Moist, rich, well-drained soil

Uses and Benefits: 'Hewitt's Double' excels in woodland edges, shaded borders, and mixed perennial plantings where height and softness are desired. Its airy form allows it to weave through companions, while its extended bloom period offers continuous interest. Perfect for naturalistic or romantic gardens, it draws in pollinators while providing visual depth and movement above more compact foliage layers.

Companion Plants: Pair Thalictrum 'Hewitt's Double' with the rich, rust-toned blooms of Hemerocallis 'Mighty Chestnut', the glowing chartreuse foliage of Aralia 'Sun King', and the late-season, shell-pink flowers of Anemone 'Queen Charlotte' for a softly dramatic combination that balances height, texture, and seasonal layering.

Care Instructions: Plant in part sun to dappled shade in moist, well-drained soil enriched with organic matter. Water regularly during dry spells. Staking may be needed in windy or exposed areas. Cut back spent stems in fall or leave seedheads for structure. Divide every few years to maintain vigour.

History: 'Hewitt's Double' is a classic selection of Thalictrum delavayi, prized for its rare double flowers and refined, architectural growth. A favourite among cottage and woodland garden enthusiasts, it continues to enchant with its timeless elegance and enduring charm.

Final Thoughts: Ethereal and upright, Thalictrum 'Hewitt's Double' floats like lavender mist above the garden—bringing grace, structure, and a touch of romance to part-shade spaces all season long.