Overview
Thalictrum flavum 'Illuminator' is a perennial in the genus Thalictrum, part of the Ranunculaceae family. Thalictrum flavum 'Illuminator' grows best in full sun and partial shade, and tolerates moist and well-drained soils. Its UK hardiness is rated H5. Suggested uses include borders, naturalistic plantings and wild gardens. It is native to Flanders and Grand Duchy of Luxembourg.
About
Thalictrum flavum 'Illuminator' is a perennial in the ranuncula family that produces airy clusters of yellow, fragrant flowers. It flowers from June to August. Plant in full sun or partial shade on moist, well-drained soil; it is rated H5, meaning hardy in most UK gardens.
Wikipedia contributors, CC BY-SA 4.0 — Thalictrum flavum
About the genus
Thalictrum is a genus of 120–200 species of herbaceous perennial flowering plants in the buttercup family, Ranunculaceae, native mostly to temperate regions. Meadow-rue is a common name for plants in this genus.
Wikipedia contributors, "Thalictrum", CC BY-SA 4.0 — Thalictrum
In the garden
Thalictrum flavum 'Illuminator' belongs to the genus Thalictrum in the Ranunculaceae and is native to Flanders and the Grand Duchy of Luxembourg. As a perennial it provides summer presence through its massed, fragrant blooms, which have a distinct perfume while they are in flower. Place plants where they receive full sun or some afternoon shade and ensure the soil remains moist yet drains freely; waterlogged or very dry soils will limit its performance. The H5 rating denotes hardy behaviour for typical UK winters, so it can be grown outdoors without winter protection across much of the country. Use 'Illuminator' towards the back of mixed borders, in naturalistic schemes or wild garden areas where its summer flowering can be appreciated alongside grasses and taller perennials. The floral scent is most noticeable during its June–August bloom, making it a good choice for planting near paths or seating where the aroma can be enjoyed.
Growing conditions
Best soil and position for Thalictrum
- Sunlight
- full sun, partial shade
- Soil type
- moist, well-drained
- Soil moisture
- moist
- UK hardiness
- H5
Plant details
Thalictrum flavum 'Illuminator' size, habit and characteristics
- Plant type
- perennial
- Suggested uses
- borders, naturalistic plantings, wild gardens
- Native to
- Flanders, Grand Duchy of Luxembourg
- Fragrance
- Flower
Care notes
Pruning and caring for Thalictrum flavum 'Illuminator'
- Cultivation
- Prefers moist, fertile soil; avoid dry conditions; can tolerate partial shade
- Pruning
- Cut back after flowering to encourage fresh growth
- Propagation
- seed, division
Frequently asked questions
How do I grow Thalictrum flavum 'Illuminator'?
Prefers moist, fertile soil; avoid dry conditions; can tolerate partial shade.
Where is the best place to plant Thalictrum flavum 'Illuminator'?
Thalictrum flavum 'Illuminator' prefers full sun and partial shade.
What soil does Thalictrum flavum 'Illuminator' need?
Thalictrum flavum 'Illuminator' grows best in moist and well-drained soil. Aim for soil that stays moist.
How do I prune Thalictrum flavum 'Illuminator'?
Cut back after flowering to encourage fresh growth.
Is Thalictrum flavum 'Illuminator' hardy in the UK?
Thalictrum flavum 'Illuminator' has an RHS hardiness rating of H5, meaning it is hardy in most of the UK, tolerating -15 to -10°C.
How do I propagate Thalictrum flavum 'Illuminator'?
Seed, division.
More in the Thalictrum genus
- Thalictrummeadow rue
- Thalictrum 'Black Stockings'Meadow-rue
- Thalictrum 'Nimbus Pink'Meadow-rue
- Thalictrum Chantilly Lace ('Mactha002')Meadow-rue
- Thalictrum del. 'Splendide White'Meadow-rue
- Thalictrum del. 'Splendide'Meadow-rue
- Thalictrum delavyi 'Hinkley'Meadow-rue
- Thalictrum diffusiflorumdiffuse-flowered meadow rue