Sunflower
Helianthus annuus
A cheerful, towering plant known for its large golden flower heads that follow the sun. Sunflowers are great for beginners and attract pollinators to the garden.
easy
Full Sun (6-8 hours)
Moderate — water deeply once a week
70-100 days to bloom
How to Grow
Sow seeds directly outdoors after the last frost. Plant 2.5 cm deep and 15 cm apart in well-drained soil. Thin seedlings to 45 cm apart once they are 7 cm tall. Water regularly until established, then reduce. Tall varieties may need staking.
Growth Phases
Germination (7-10 days)
Seed sprouts and pushes through soil
Seedling (2-3 weeks)
First pair of true leaves emerge
Vegetative (4-5 weeks)
Rapid stem and leaf growth, height increases quickly
Budding (1-2 weeks)
Flower bud forms at the top of the stem
Blooming (2-3 weeks)
Flower opens fully, attracting bees and birds
Care Tips
- •Thin seedlings to prevent crowding
- •Stake tall varieties in windy areas
- •Leave seed heads for birds in autumn
Companion Plants
Community Interest
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