Overview
Helianthus annuus 'Ring of Fire' is a bushy, clump forming annual biennial in the genus Helianthus, part of the Asteraceae family, with deciduous foliage. Helianthus annuus 'Ring of Fire' grows best in full sun, and tolerates loam soils and neutral and alkaline pH. Its UK hardiness is rated H5. Suggested uses include wildlife gardens, cottage and informal garden, flower borders and beds and cut flowers.
About
Helianthus annuus 'Ring of Fire' is a cultivar of sunflower within the Helianthus genus, known for its upright, often tall annuals with broad, simple leaves and large daisy-like flower heads. This bushy, clump-forming annual thrives in full sun and prefers a south-facing, sheltered aspect with moist but well-drained loam soil of neutral to alkaline pH. It is deciduous and hardy to UK zone H5. 'Ring of Fire' is suitable for wildlife gardens, cottage and informal gardens, flower borders and beds, and can also be grown for cut flowers. Propagation is by seed or division, with interest in spring.
Growing conditions
Best soil and position for Helianthus
- Sunlight
- Full sun
- Soil type
- Loam
- Soil pH
- Neutral, Alkaline
- Soil moisture
- Moist but well-drained
- Aspect
- South-facing
- Exposure
- Sheltered
- UK hardiness
- H5
Plant details
Helianthus annuus 'Ring of Fire' size, habit and characteristics
- Plant type
- Annual Biennial
- Habit
- Bushy, Clump forming
- Foliage
- Deciduous
- Suggested uses
- Wildlife gardens, Cottage and informal garden, Flower borders and beds, Cut flowers
Care notes
Pruning and caring for Helianthus annuus 'Ring of Fire'
- Propagation
- Seed, Division
- Pest resistance
- Susceptible to slugs and snails
- Disease resistance
- Susceptible to powdery mildews and sclerotinia diseases
Frequently asked questions
Where is the best place to plant Helianthus annuus 'Ring of Fire'?
Helianthus annuus 'Ring of Fire' prefers full sun. It suits sheltered positions.
What soil does Helianthus annuus 'Ring of Fire' need?
Helianthus annuus 'Ring of Fire' grows best in loam soil. It prefers neutral and alkaline soil. Aim for soil that stays moist but well-drained.
Is Helianthus annuus 'Ring of Fire' hardy in the UK?
Helianthus annuus 'Ring of Fire' 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 Helianthus annuus 'Ring of Fire'?
Seed, Division.
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