Sunflower (Helianthus annuus) — annual flower.
Sunflower (Helianthus annuus) – annual flower. The sunflower grows spectacularly, following the sun, with large flower heads; food for pollinators and birds.
Benefits
- Abundant flowering all season long
- Ideal for pots, planters and borders
Seasonal care
- Spring: Start of the growing season: apply a suitable fertiliser and provide sun or partial shade.
- Summer: Water consistently, without excess.
- Autumn: Autumn is a good time for planting; gradually reduce watering.
- Winter: Frost-sensitive (down to about 2°C) – overwinter it in a bright, cool place.
Specifications
- Botanical name: Helianthus annuus
- Botanical family: Asteraceae
- Life cycle: Annual
- Foliage: Deciduous
- Exposure: Sun / partial shade
- Placement: Outdoors
- Growth rate: Fast
- Minimum temperature: 2 °C
- Drought resistance: Low
- Mature height: 100-250 cm
- Mature width: 20-35 cm
- Flowering period: May–October
- Flower colour: Yellow
- Fragrance: Subtle
- Soil: Fertile, well drained
- pH: 6,0-7,0
- Watering: Moderate to high
- Fertilising: Every 1–2 weeks while in flower
- Pruning: Removing spent flowers
- Mulching: Optional
- Product code: 4030730
- EAN code: 6420384030730
Warnings
- Frost-sensitive
- Flowers more abundantly if you remove spent blooms
Frequently asked questions
Does it survive winter outdoors?
Not entirely – it is frost-sensitive (down to about 2°C); in northern regions it should be sheltered in winter or grown in a pot.
What exposure and watering does it prefer?
Sun / partial shade; moderate to high watering. The sunflower grows spectacularly, following the sun, with large flower heads; food for pollinators and birds.
When does it flower?
Flowering period: May–October.
