Thalictrum flavum subsp. glaucum - Meadow-rue
Thalictrum flavum subsp. glaucum - Meadow-rue
Thalictrum flavum subsp.glaucum
Glaucous-leaved yellow meadow rue
With other Thalictrums, they thrive in a shady bed with sarcococca, hellebores, and cyclamens. Three trees protect this bed: a 40-year-old apple tree, a 50-year-old walnut tree, and a 15-year-old humilis birch.
Hlod, 07/09/2024
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Description
Thalictrum flavum glaucum, a natural variety of Yellow Meadow-rue, is a perennial plant with a bushy habit. Its elegant foliage displays a beautiful bluish-green colour with silver reflections. The generous flowering is pale yellow in colour. With its size, airy appearance, and pretty pastel colours of its inflorescences, it will be perfect for adding height and lightness to flower beds.
Originally from Spain and North Africa, Thalictrum flavum subspecies glaucum is a perennial plant with a bushy habit, forming clumps 1 to 1.5 metres (3 to 5 feet) tall and about 50 cm (20in) wide. The flowering takes place between June and July, with tall stems topped with numerous small flowers with very long stamens, they are pale yellow in colour and resemble mimosa flowers. Its deciduous foliage perfectly highlights the flowers with its bluish-green colour. The leaves are glaucous, light, and deeply lobed.
Despite its seemingly delicate and fragile appearance, Thalictrum flavum ssp. glaucum is very hardy and low-maintenance, although it may take some time to establish itself. This meadow-rue is the ideal plant to brighten up and flower shaded areas in the garden. It will create a beautiful contrast with less delicate perennials, as well as at the edge of shrub beds. It will naturally find its place alongside Hostas, Hydrangeas, Japanese Anemones, or ferns, for example. This plant will also thrive in shaded rockeries.
Thalictrum flavum subsp. glaucum - Meadow-rue in pictures
Flowering
Foliage
Plant habit
Botanical data
Thalictrum
flavum subsp.glaucum
Ranunculaceae
Glaucous-leaved yellow meadow rue
Mediterranean
Planting and care
Thalictrum flavum ssp. glaucum thrives in sunny or partially shaded positions. Plant it from March to May and from September to November in a humus-rich, moist to wet soil, rich in organic matter and well-drained. It also tolerates acidic or slightly chalky soils. Do not hesitate to amend the soil with compost every year to facilitate root development. Water well during very dry and hot summer periods, especially during the first few years after planting. Deciduous, it completely disappears in winter and will only reappear in spring, and quite late. Therefore, it is advisable not to cut the plant to ground level in autumn, so as not to forget its location in the following spring. It is a slow-growing plant, but it will delight the gardener over the years.
Planting period
Intended location
Care
Planting & care advice
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
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In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.
The planting period indicated on our website applies to regions in USDA Zone 9a (East Coast and Midlands: Dublin, Wexford, Waterford, Kilkenny, Portlaoise). It will vary depending on where you live:
- On the west coast and in the north-west (Galway, Limerick, Sligo, Donegal, Westport), delay planting by 1 to 2 weeks in spring and bring it forward by 1 to 2 weeks in autumn compared to the dates given, preferably choosing periods without strong winds.
- In the inland hills and plateaus (Wicklow Mountains, Macgillycuddy’s Reeks, Connemara, Killarney), it is best to plant in spring (April–May) or autumn (September–October), avoiding periods of waterlogged soil in winter and strong winds, which pose the main risk to newly planted trees in these areas.
The flowering period indicated on our website applies to regions in USDA Zone 9a, such as the East Coast and Midlands, including Dublin, Wexford, Waterford, Kilkenny and Portlaoise.
This will vary depending on where you live:
- On the west coast and in the northwest (Galway, Limerick, Sligo, Donegal and Westport), it will be delayed by one to two weeks compared to the given dates, due to stronger Atlantic winds and less spring sunshine.
- In the inland hills and plateaus (the Wicklow Mountains, the Macgillycuddy's Reeks, Connemara and Killarney), flowering will be delayed by two to three weeks. Flowering mainly occurs between May and July, with the limiting factors being less frost and more of the excessive humidity, strong winds and lack of sunshine that are characteristic of these areas.