Thalictrum delavayi (T. dipterocarpum) – elegant, high flowering perennial

Thalictrum delavayi, also known as T. dipterocarpum, is a perennial ornamental plant known for its long, airy flower stems and striking panicles of flowers. This perennial is ideal for borders, natural gardens, and larger planting projects where height, structure, and delicate flowers are desired. With its elegant and airy appearance, Thalictrum delavayi adds a romantic touch to both classic and modern gardens.

Features – tall, graceful flowers

Thalictrum delavayi grows to a height of 120–180 cm, with sturdy, upright stems bearing numerous small flowers. The flowers appear in loose, panicle-like clusters and have a light, often lavender to purple hue, which rise elegantly above the finely incised foliage.

The foliage is deeply incised, fresh green, and airy, giving the plant an elegant appearance even when not yet in full bloom. Flowering occurs from June to August, depending on the location and local growing conditions.

Location and care

Thalictrum delavayi is relatively easy to maintain, provided the plant has a suitable location:

• Sun: Part shade to light sun for optimal growth and flowering

• Soil: well-drained, humus-rich soil; prefers slightly moist, nutritious soils

• Water: Water regularly, especially during dry periods

• Fertilization: organic fertilizer in spring encourages healthy growth and richer flowering.

Support may be necessary for the taller stems, especially in windy locations. Due to its airy growth, the plant combines well with other perennials that grow to shorter or medium heights.

Application in garden design

Thalictrum delavayi is versatile in the garden and can be used in various ways:

• Back border: the tall stems and plume-shaped flowers make the plant ideal as a back layer in the border

• Natural gardens: works well with wildflowers, perennials and ornamental grasses

• Romantic or cottage gardens: elegant flowers and airy stems enhance the soft, dreamy effect

• Cut flowers: the long stems and decorative plumes are excellent for bouquets and flower arrangements

• Combinations: Combines beautifully with Echinacea, Rudbeckia, Astilbe, hostas and ornamental grasses for contrast in color and texture.

With its long stems and airy foliage, Thalictrum delavayi adds height, movement and depth to borders and larger gardens.

Advantages

1. Elegant, tall flower stems: ideal for structural borders and cut flowers

2. Long flowering period: from June to August

3. Airy and graceful foliage: retains decorative value even without flowers

4. Versatile: borders, natural gardens, cottage gardens and cut flowers

5. Combines well: with perennials, ornamental grasses and colorful summer bloomers