Description

Sunflower Giant F1 is a premium hybrid variety that produces extra-large flowers on strong, tall stems. Ideal for spring and summer gardening, this variety stands out with its impressive height and vibrant yellow petals.

This hybrid grows quickly, requires minimal care, and thrives in full sun. It is perfect for home gardens, landscape borders, and decorative beds. Giant F1 sunflowers are also excellent for cut flower arrangements and attract pollinators such as bees and butterflies.

The Giant F1 sunflower’s uniform growth and high-yielding nature make it a favorite for both hobby gardeners and commercial growers. Its resilience in hot climates ensures continuous blooms throughout the summer.

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📅 Sowing Season Table

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🌱 Germination + Growing + Transplanting

🌱 Germination:

• Germination time: 7–10 days

• Temperature: 20–28°C

• Sow 1–2 cm deep in well-drained soil

• Keep soil moist until seedlings emerge

🌿 Growing:

• Requires full sunlight for best growth

• Moderate watering; avoid waterlogging

• Fertile, well-draining soil produces bigger flowers

🌼 Transplanting:

• Direct sowing recommended; transplant optional

• Spacing: 18–24 inches between plants

• Support tall stems with stakes to prevent bending

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🌿 Fertilizer Guide (3 Stages – Specific Fertilizers)

1️⃣ Seedling Stage (Early Growth):

• Fertilizer: 20-20-20 NPK water-soluble

• Application: 1–2 g/L water once a week

• Purpose: Promotes strong root system and healthy leaves

2️⃣ Vegetative Growth (Stem & Leaf Development):

• Fertilizer: Urea (46-0-0) or Ammonium Sulfate (21-0-0)

• Application: 2–3 g/L every 10–15 days

• Purpose: Encourages tall, sturdy stems and lush foliage

3️⃣ Flowering & Seed Formation:

• Fertilizer: 5-15-45 NPK + 0-0-51 (potassium sulfate)

• Optional Additive: Epsom salt (MgSO₄) 1–2 g/L

• Application: Every 10–15 days during flowering

• Purpose: Enhances flower size, color, and seed production

💡 Tip: Fertilize as soil drench or foliar spray and maintain proper watering for optimal absorption. Avoid over-fertilization.

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