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The meadow rue (Thalictrum) is closely related to the columbine (Aquilegia) and is often confused with it when it does not flower because the leaves look very similar. Meadow diamonds belong like the Akeleien to the family of the cock foot plants (Ranunculaceae). Of horticultural interest are about five to seven species, which, like all about 130 species from Europe, North Africa or Asia come. The only native species is the Akeleiblättrige meadow rue (Thalictrum aquilegifolium).
Appearance and growth
Meadow rhizomes grow upright and develop into stately perennials in the course of summer - stature heights of 180 centimeters are quite possible in some species. The leaves are unpaired pinnate, the leaflets roundish and front mostly deeply cut. The panicle-like, loose inflorescences consist of up to two hundred small flowers. These have no petals, but colored bracts. They surround the dense clumps, sometimes conspicuously colored stamens and often fall off shortly after the opening of the flowers. Most grasses bloom from July to August, the native Akeleiblättrige meadow rue usually a month earlier. The different flower colors include pure white and yellow as well as pastel pink and purple tones.
The Akeleiblättrige Meadow Rue (Thalictrum aquilegifolium) is the only native of our kind
Location and ground
Meadow ravens grow on sunny and semi-shady meadows or on forest edges with humus-rich and nutrient-rich, preferably calcareous soils that must not be too dry. The perennials rather like cool temperatures and high humidity. The highest drought tolerance shows the Chinese meadow rue (Thalictrum delavayi).
Meadow grouses are graceful appearances that deserve a box seat in half-shady perennials. A sunny location is only recommended if the soil is sufficiently moist. The perennials are usually set individually as Leitstauden and grouped around them the smaller species. Flowering grasses are especially good in front of a dark background, for example in front of a yew hedge. The local meadow rue is well suited for natural gardens and is like most species a good bee pasture. At the garden pond, the filigree perennials also feel very well - here the slightly damper soil and the microclimate with higher humidity are very helpful. Ornamental grasses and not too small, somewhat rough-looking perennials with large, decorative leaves, for example Rodgersia or gold bulbs (Ligularia), are suitable as combination partners for grasses.
If necessary, you can share the perennials in spring. However, as a rejuvenation measure, this is not necessary as the plants are inherently very long-lived and will become more beautiful year after year if allowed to grow undisturbed.
Yellow meadow rue (Thalictrum flavum)
In case of prolonged drought you should water the perennials in time. At locations exposed to the wind, they need a support so that the stalks do not bend.
All species are easily propagated by division - either immediately after flowering or in early spring.
Diseases and pests
In dry, shady places, it sometimes comes to aphid. In addition, the perennials are somewhat prone to powdery mildew.