Thalictrum (thal-lik-trum) Meadow Rue; Ranunculaceae Family. Perennials of north temperate Europe, Asia and America, Thalictrum have graceful, deeply cut foliage, usually blue-green, and small, delicate, feathery florets in sprays. All are easily grown, in well-drained, ordinary garden soil, with ample moisture and full sun or partial shade.
Thalictrum rochebrunianum (rosh-brew-nee-ay-num) is an airy species, 3 to 4 feet tall, with divided leaves, similar to those of maidenhair fern. Pale purple flowers in pyramidal clusters bloom in summer. T. rochebrunianum does best in partial shade with slightly acid soil; and makes a good cut flower.
Thalictrum prefers dappled shade, though it will grow in full sun in northern regions if adequate water is provided. Plant in humus-rich, moist, well-drained soil. The open, airy habit of this perennial allows you to plant it closer to the front of the border with darker colors behind for an interesting see-through effect. Do not disturb it once it is established. It will live for many, many years without the need for division.
Attributes: Border plants, Cut flower or foliage, Mass Planting, Specimen or focal point. Deer resistant. Use in the middle or rear of a flower garden to create a background for large flowers or bold foliage.