Unwins Sunflower ‘Giant Single’ Seeds (45 Seeds)

Grow an unforgettable garden showpiece with Unwins Sunflower ‘Giant Single’ — a huge, traditional sunflower variety that can reach an incredible 4 metres tall. With flower heads that can grow up to 40cm wide, these towering blooms bring dramatic height, colour, and excitement to borders, veg plots, and wildlife-friendly gardens.

Quick to grow and supported by a strong, sturdy stem, this sunflower is an excellent choice for children’s gardens, school projects, and anyone who loves growing impressive plants. Ideal for sowing outdoors and perfect for adding instant summer impact from July through to October.

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Key Features

• Traditional giant sunflowers growing up to 4m tall

• Huge blooms up to 40cm wide

• Quick to grow with strong, sturdy stems

• Perfect for children and family gardening

• Great for borders, veg plots, and tall back-of-border displays

• Easy to sow outdoors and highly rewarding

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Sowing & Flowering

Sowing Time: March – May
Flowering Time: July – October
Sow Outdoors: Yes
Sow to Germination: 1–2 weeks
Sow to Flower: 3–4 months

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Technical Specification

• SKU: 30210649

• Pack Quantity: 45 seeds

• Colour: Yellow

• Plant Height: 4m

• Spread: 45cm

• Plant Spacing: 45cm

• Sowing Depth: 10–15mm

• Time to Germination: 1–2 weeks

• Time to Flower: 3–4 months

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Why choose Kean’s Claremorris

• Trusted local store with knowledgeable staff

• Quality seed varieties selected for Irish gardens

• Great seasonal selection for children’s gardening, wildlife planting, and summer colour