Overview
Thalictrum flavum is a clump forming herbaceous perennial in the genus Thalictrum, part of the Ranunculaceae family, with deciduous foliage. It typically grows around 1-1.5 metres tall and 0.1-0.5 metres wide, reaching full size in around 2-5 years. Thalictrum flavum grows best in full sun and partial shade, and tolerates most soils and any pH. Its UK hardiness is rated H7. It is attractive to pollinators. Suggested uses include cottage and informal garden, wildflower meadow and wildlife gardens. It is native to Europe.
About
This clump-forming perennial reaches a height of approximately 1 meter. It features finely divided, lacy green foliage that can grow up to 40 centimeters in length. During the summer, it produces slender panicles topped with soft, lemon yellow blooms.
About the genus
Thalictrum consists of perennial plants that can be either rhizomatous or tuberous. They feature finely divided leaves that may be ternate or pinnate, and produce small flowers arranged in panicles or racemes. These flowers are notable for their prominent stamens and, in some species, large, colorful sepals that resemble petals.
Growing conditions
Best soil and position for Thalictrum
- Sunlight
- Full sun, Partial shade
- Soil type
- Loam, Clay, Chalk
- Soil pH
- Neutral, Acid, Alkaline
- Soil moisture
- Moist but well-drained
- Aspect
- East-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H7
Plant details
Thalictrum flavum size, habit and characteristics
- Plant type
- Herbaceous Perennial
- Habit
- Clump forming
- Foliage
- Deciduous
- Height
- 1-1.5 metres
- Spread
- 0.1-0.5 metres
- Time to full height
- 2-5 years
- Suggested uses
- Cottage and informal garden, Wildflower meadow, Wildlife gardens
- Native to
- Europe
- Fragrance
- Flower
Care notes
Pruning and caring for Thalictrum flavum
- Cultivation
- Grow in moist, humus-rich soil in partial shade; can tolerate drier soil and more sun than many other species. May need staking. See staking perennials for further advice
- Pruning
- Faded flower stems can be cut back in late autumn or in spring before new growth starts emerging
- Propagation
- Propagate by seed or division in spring
- Pest resistance
- Generally pest-free
- Disease resistance
- May be susceptible to Powdery mildews
Frequently asked questions
How do I grow Thalictrum flavum?
Grow in moist, humus-rich soil in partial shade; can tolerate drier soil and more sun than many other species. May need staking. See staking perennials for further advice.
Where is the best place to plant Thalictrum flavum?
Thalictrum flavum prefers full sun and partial shade. It suits sheltered positions.
What soil does Thalictrum flavum need?
Thalictrum flavum is adaptable and grows happily in most soil types, including loam, clay and chalk. It is happy in soil of any pH. Aim for soil that stays moist but well-drained.
How do I prune Thalictrum flavum?
Faded flower stems can be cut back in late autumn or in spring before new growth starts emerging.
How big does Thalictrum flavum grow?
Thalictrum flavum reaches a height of 1-1.5 metres and a spread of 0.1-0.5 metres. It takes around 2-5 years to reach full size.
Is Thalictrum flavum hardy in the UK?
Thalictrum flavum has a UK hardiness rating of H7.
How do I propagate Thalictrum flavum?
Propagate by seed or division in spring.
Is Thalictrum flavum good for pollinators?
Yes — Thalictrum flavum attracts and supports pollinators such as bees and other beneficial insects.