Giant Sunflower - Quebec Seeds | Seigneurie Seedlings

The spectacular 2-3 meter sunflower, star of the Quebec garden!

The Giant sunflower is an impressive variety producing enormous flower heads 25-40 cm in diameter on sturdy 2-3 meter stems. Grown at Semis de la Seigneurie, this majestic sunflower offers vibrant golden-yellow flowers that follow the sun and produce hundreds of edible seeds. Perfect for creating a living wall, attracting pollinators, and harvesting tasty seeds.

Why choose the Giant sunflower from Semences de la Seigneurie?

✅ Seeds produced in Quebec – Suitable for zone 4b+, without chemical pesticides

✅ Spectacular height – 2-3 meters, guaranteed visual effect

✅ Huge flower heads – 25-40 cm in diameter

✅ Edible seeds – A bountiful harvest for you and the birds

✅ Attracts pollinators – Bees, butterflies and birds

Culture in Quebec (zone 4b and above)

Sow directly in the garden after the last frost (late May) in full sun. Plant the seeds 2-3 cm deep, spacing them 45-60 cm apart. Water regularly at first. Sunflowers grow quickly and flower in 80-100 days. Stake them if necessary in windy areas.

Producer's advice

💚 Direct sowing recommended – deep taproot

☀️ Full sun required (minimum 8 hours)

🌻 Tree staking in windy areas

🐦 Protect the seeds from birds with netting if you want to harvest them

Uses

Giant sunflowers are perfect for creating a green wall, edging the garden, attracting pollinators, producing edible seeds (roasted, as a snack), feeding birds in autumn, and creating spectacular bouquets!

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🌱 CULTURE

Direct sowing in the garden:

• Sow after the last frost (late May - early June)
• Soil temperature: 15°C minimum
• Depth: 2-3 cm
• Spacing: 45-60 cm between plants
• Germination: 7-10 days

Interview :

• Water regularly at first (then drought tolerant)
• Well-drained soil, rich in organic matter
• Full sun required
• Tuition in windy areas
• Little maintenance required

Bloom :

• 80-100 days after sowing
• Flower heads 25-40 cm
• Flowering period: July-September
• Flowers follow the sun

Harvesting the seeds:

• Wait until the capitate dries and droops
• Ripe seeds: black and hard
• Cut the flower head with 30 cm of stem
• Hang upside down to dry
• Rub to release seeds

Adaptation to the Quebec climate:

✅ Rapid growth adapted to our short season

✅ Tolerates temperature variations well

✅ Withstands cool summer nights

✅ Variety successfully tested in zone 4b

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🌟 MAIN FEATURES

• Common name: Giant Sunflower
• Botanical name: Helianthus annuus
• Type: Annual
• Maturity: 80-100 days
• Height: 2-3 meters
• Flower head diameter: 25-40 cm
• Color: Bright golden yellow
• Spacing: 45-60 cm
• Hardiness zone: Annual, zone 4b and above
• Seed origin: Produced in Quebec by Les Semis de la Seigneurie
• Free from chemical pesticides

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💡 SUGGESTIONS FOR USE

In the garden:

• 🌻 Living wall – Spectacular border
• 🐝 Attracts pollinators – Bees and butterflies
• 🎨 Visual effect – Focal point of the garden
• 🌾 Natural windbreak – Protection for other plants

Edible seeds:

• 🥜 Toasted – Healthy Snack
• 🥗 Salads – Crunchy and nutritious
• 🍞 Bread and pastries – Texture and flavor
• 🐦 Bird food – Leave a few flower heads

Seed preservation:

• Dry completely before storing
• Airtight container, store in a cool and dry place
• Shelf life: 1-2 years