Not the plant you're looking for? Search over 300,000 plants
Annual Biennial
Size
Ultimate height
0.5–1 metresTime to ultimate height
1 yearUltimate spread
0.5–1 metresGrowing conditions
Chalk
Loam
Sand
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
Stem | Flower | Foliage | Fruit | |
Spring | Green | |||
---|---|---|---|---|
Summer | Yellow | Green | ||
Autumn | Green | |||
Winter |
Position
- Full sun
Aspect
South–facing or West–facing
Exposure
Sheltered Hardiness
H4Botanical details
- Family
- Asteraceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Bushy
- Genus
Helianthus can be tall, erect annuals, tuberous or rhizomatous perennials, with coarse simple leaves and large daisy-like flower-heads
- Name status
Trade
How to grow
Cultivation
Grow in a moderately fertile, humus-rich, moist but well-drained, neutral to alkaline soil in full sun. Will flower best in a long, hot summer
Propagation
Propagate by seed or division. Divide established clumps every 2-4 years to both increase plants and retain vigour. See sowing seeds indoors for further advice
Suggested planting locations and garden types
- Cottage and informal garden
- Patio and container plants
- Wildlife gardens
- Cut flowers
- Flower borders and beds
- Wall side borders
Pruning
No pruning required
Pests
Diseases
May be susceptible to powdery mildews and sclerotinia diseases
Get involved
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.