Overview
Trollius x cultorum 'Helios' is a clump forming herbaceous perennial in the genus Trollius, part of the Ranunculaceae family, with deciduous foliage. Trollius x cultorum 'Helios' grows best in full sun and partial shade, and tolerates clay and loam soils and any pH. Its UK hardiness is rated H7. Suggested uses include cottage and informal garden, wildflower meadow and flower borders and beds.
About
Trollius x cultorum 'Helios' is a clump-forming perennial cultivar within the Trollius genus, known for its palmately lobed foliage and upright stems bearing distinctive yellow, rounded or bowl-shaped flowers. This deciduous plant thrives in full sun or partial shade and is suitable for a variety of soil types, including clay and loam, with moisture levels ranging from moist but well-drained to poorly-drained. Hardy to UK zone H7, 'Helios' is ideal for cottage gardens, wildflower meadows, and flower borders, offering seasonal interest throughout spring and summer. It is best planted in well-drained soil and requires watering during establishment, with propagation by division in spring.
Growing conditions
Best soil and position for Trollius
- Sunlight
- Full sun, Partial shade
- Soil type
- Clay, Loam
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained, Poorly-drained
- Aspect
- South-facing, West-facing, East-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H7
Plant details
Trollius x cultorum 'Helios' size, habit and characteristics
- Plant type
- Herbaceous Perennial, Bogs
- Habit
- Clump forming
- Foliage
- Deciduous
- Suggested uses
- Cottage and informal garden, Wildflower meadow, Flower borders and beds
Care notes
Pruning and caring for Trollius x cultorum 'Helios'
- Propagation
- Division in spring
- Pest resistance
- Generally pest-free
- Disease resistance
- May be susceptible to powdery mildews
Frequently asked questions
Where is the best place to plant Trollius x cultorum 'Helios'?
Trollius x cultorum 'Helios' prefers full sun and partial shade. It suits exposed and sheltered positions.
What soil does Trollius x cultorum 'Helios' need?
Trollius x cultorum 'Helios' grows best in clay and loam soil. It is happy in soil of any pH. Aim for soil that stays moist but well-drained to poorly-drained.
Is Trollius x cultorum 'Helios' hardy in the UK?
Trollius x cultorum 'Helios' has an RHS hardiness rating of H7, meaning it is fully hardy throughout the UK, tolerating temperatures below -20°C.
How do I propagate Trollius x cultorum 'Helios'?
Division in spring.
More in the Trollius genus
- Trollius riederianus
- Trollius x cultorum 'Byrne's Giant'
- Trollius x cultorum 'Earliest of All'
- Trollius x cultorum 'Orange Globe'
- Trollius x cultorum 'Prichard's Giant'
- Trollius 'Orange Triumph'
- Trollius 'Super Bowl'
- Trollius sinensisChinese globeflower