Thalictrum lucidum aka Shining Meadow Rue

Thalictrum lucidum, or shining meadow rue, belongs to the buttercup family, Ranunculaceae. Its native range spans Europe, western Siberia and Türkiye. It is not native to Britain or Ireland. This herbaceous perennial grows in a temperate climate. Its leaves fall each year, rather than staying green through winter. The RHS also lists Thalictrum angustifolium as a synonym.

The plant has a tall, upright form with a narrow spread. Garden plants reach about 3.3–4.9 feet [1–1.5 metres] tall. Their spread is about 0.3–1.6 feet [0.1–0.5 metres]. They take two to five years to reach full size. The leaves have a glossy surface and a fern-like look. Narrow leaflets give the foliage its fine texture. In autumn, the leaves turn a clear, bright yellow. The tall stems may need stakes to keep them upright.

In summer, the plant bears clusters of pale, creamy yellow flowers. Each cluster has a soft, fluffy look and a light scent. The flowers add summer colour above the fine-textured leaves. The RHS recommends this species for flower beds and borders. It also suits cottage gardens, informal schemes and wildlife gardens. Gardeners can cut its flowering stems for use indoors. Its upright shape and narrow spread suit planting among other border plants.

Choose partial shade and soil rich in humus. A sunny site also works if the soil stays moist. The RHS lists chalk, clay and loam as suitable soils. It accepts acid, neutral and alkaline soil conditions. Moist soil with good drainage suits it, but it also tolerates poor drainage. Choose a sheltered spot rather than an exposed site. The RHS gives it an H7 hardiness rating. This rating covers severe European continental winters below −20°C. Keeping the soil moist matters when growing it in sun.

Routine care includes cutting the stems down after flowering ends. The RHS reports few pest problems for this species. Dry conditions can make it prone to powdery mildew. Raise new plants from seed in pots within a cold frame. Sow when the seed ripens, or wait until early spring. You can also divide plants as fresh growth starts in spring. The supplied sources give no species-level guidance on edible parts or toxicity. They also provide no details about its fruit.