Free Shipping on Orders Over $19.90 Germination Support U.S. Customer Support Dispatched Fast, Grown with Care

Shop seeds & grow with confidence.

Flower Seeds
Annual Flowers Flower Border Annual Cut Flowers Annual Zinnia Marigold Cosmos Petunia China Aster
Perennial Flowers Flower Border Perennial Cut Flowers Perennial Rose Dianthus Echinacea Rudbeckia
Wildflower & Pollinator Wildflower Mixes Ornamental Flowers Spring Seeds Gaillardia Salvia Asclepias
Shop All Flower Seeds New Flowers Best-Selling Flowers Easy Planting
Vegetable Seeds
Fruiting Vegetables All Fruiting Vegetables Ornamental Vegetables and Fruits
Leafy Vegetables All Leafy Vegetables Amaranthus Portulaca Oleracea
Brassica & Cole Crops Brassica Cauliflower
Shop All Vegetable Seeds All Vegetable Seeds Early Maturing Easy Planting
Herb Seeds
Cooking Herbs All Cooking Herbs Chives Dill Coriander Fennel
Medicinal & Aromatic Medicinal Herbs Aromatic Plants Thymus Rosemary Borage
Ornamental Herbs Viewing Aromatic Plants Agastache Chamaemelum
Shop All Herb Seeds All Herb Seeds
Fruit & Tree Seeds
Fruit Seeds All Fruit & Tree Seeds
Ornamental Fruits Ornamental Vegetables and Fruits
Garden Fruits Fruiting Vegetables
Flower Bulbs
Flower Bulbs All Flower Bulbs Tulip Daffodil Hyacinth Amaryllis
Lilies & Fragrant Bulbs Lily Freesia Tuberose Lily of the Valley
Specialty Bulbs & Roots Red Spider Lily Peony Rhizomes Saffron Oxalis
Lawn & Grass
Lawn Grass All Lawn & Grass Tall Fescue Fine Fescue Lolium Perenne Agrostis Canina
Clover & Ground Cover Clover Trifolium Other Greenery and Grass
Seed Collections
Seasonal Picks Spring Seeds Plant This Month Early Maturing
Space & Skill Patio Planting Family Balcony Easy Planting
Popular Collections Best-Selling Flowers New Flowers Ornamental Flowers Aromatic Plants
Planting Guides
Seed Starting Guide Timing, trays, moisture, and early seedling care. Cut Flower Growing Guide Plan beds, choose varieties, and harvest steady color. Companion Planting Guide Pair vegetables, herbs, and flowers with purpose. Soil Preparation Guide Build a better foundation before sowing.
Best Sellers Shop Best Sellers
Giant Sunflower Seeds

Giant Sunflower Seeds

Write a review
$5.98

Grow Giant Sunflower from seed for garden beds, borders, containers, or seasonal color. This product page includes concise planting details to help gardeners compare...

Pack Size Help me choose

In stock - ready to add to your cart

Shipping options and delivery estimates are confirmed at checkout.

Germination Support U.S. Customer Support Planting Guidance
SunFull Sun
Height3-10 ft.
Days to Bloom70-100 Days
Sowing SeasonSpring, Summer
USDA ZonesAnnual
Germination Time7-10 Days

About Giant Sunflower Seeds

Sunflowers are vibrant, fast-growing annual flowers that bring color and height to gardens, attracting pollinators and birds.

Planting Guide:

  • When to Plant: Sow outdoors in late spring after the last frost.

  • Soil: Well-drained, fertile soil.

  • Depth: Plant seeds 1 inch (2.5 cm) deep.

  • Spacing: 12–18 inches (30–45 cm) apart for giant varieties.

  • Light: Full sun (6–8 hours daily).

  • Water: Moderate; keep soil moist but not waterlogged.

  • Temperature: Germinates best at 70–78°F (21–25°C).

  • Germination Time: 7–14 days.

  • Blooming: Summer through early fall.

Great for
Cut Flowers Pollinator
Friendly Heat & Drought Tolerant

Why Gardeners Love It

✓ Adds garden color with an easy seed-starting option

✓ Useful for beds, borders, containers, or mixed plantings

✓ A practical choice for seasonal flower displays

✓ Pairs well with other annual and perennial garden favorites

✓ Good for gardeners building a more colorful outdoor space

Planting Guide

Sow Giant Sunflower in spring, summer where it can receive full sun. Keep the seedbed evenly moist until germination, usually 7-10 days.

Grow plants to about 3-10 ft. and plan for blooms in about 70-100 days.

Best suited to USDA zones Annual. Adjust sowing time for your local frost dates and summer heat.

Shipping & Returns
Orders are packed with care when items are available. Shipping options, delivery estimates, rates and taxes are confirmed at checkout where applicable.
Germination Support
If seeds do not germinate under recommended conditions, contact us within 30 days with your order number and photos of your setup. We will review eligible claims and help with replacement guidance, store credit or next planting steps.
Germination SupportGuidance for strong, healthy growth.
U.S. SupportReal people, here to help you grow.
Secure CheckoutYour payment is safe and protected.
Shipping InfoShipping options are shown at checkout.

Customer Reviews

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

You May Also Like

Free Planting Guide

Tips for sowing, growing and enjoying your next seed order.

Read the Guide
Your shopping cart is empty!
Continue shopping
Processing time Orders are usually prepared in 1-3 business days when items are in stock.
Estimated delivery Most U.S. seed orders arrive in about 5-12 business days after dispatch.

Gardeners also choose

Top picks from current best sellers.

Yacon Seeds Yacon Seeds $6.98
Creeping Thyme Seeds Red Beautiful Ground Cover Creeping Thyme Seeds Red Beautiful Ground Cover $7.98
Creeping Thyme Seeds White Beautiful Ground Cover Creeping Thyme Seeds White Beautiful Ground Cover $7.98

Add $0.20 more for FREE shipping!

Discount codes

Add one or more codes before checkout.

Codes are sent to checkout together and are applied when eligible.

Subtotal $0.00
View cart
Giant Sunflower Seeds

Giant Sunflower Seeds

Write a review
$5.98

Grow Giant Sunflower from seed for garden beds, borders, containers, or seasonal color. This product page includes concise planting details to help gardeners compare...

Pack Size Help me choose

In stock - ready to add to your cart

Shipping options and delivery estimates are confirmed at checkout.

Germination Support U.S. Customer Support Planting Guidance
SunFull Sun
Height3-10 ft.
Days to Bloom70-100 Days
Sowing SeasonSpring, Summer
USDA ZonesAnnual
Germination Time7-10 Days

About Giant Sunflower Seeds

Sunflowers are vibrant, fast-growing annual flowers that bring color and height to gardens, attracting pollinators and birds.

Planting Guide:

  • When to Plant: Sow outdoors in late spring after the last frost.

  • Soil: Well-drained, fertile soil.

  • Depth: Plant seeds 1 inch (2.5 cm) deep.

  • Spacing: 12–18 inches (30–45 cm) apart for giant varieties.

  • Light: Full sun (6–8 hours daily).

  • Water: Moderate; keep soil moist but not waterlogged.

  • Temperature: Germinates best at 70–78°F (21–25°C).

  • Germination Time: 7–14 days.

  • Blooming: Summer through early fall.

Great for
Cut Flowers Pollinator
Friendly Heat & Drought Tolerant

Why Gardeners Love It

✓ Adds garden color with an easy seed-starting option

✓ Useful for beds, borders, containers, or mixed plantings

✓ A practical choice for seasonal flower displays

✓ Pairs well with other annual and perennial garden favorites

✓ Good for gardeners building a more colorful outdoor space

Planting Guide

Sow Giant Sunflower in spring, summer where it can receive full sun. Keep the seedbed evenly moist until germination, usually 7-10 days.

Grow plants to about 3-10 ft. and plan for blooms in about 70-100 days.

Best suited to USDA zones Annual. Adjust sowing time for your local frost dates and summer heat.

Shipping & Returns
Orders are packed with care when items are available. Shipping options, delivery estimates, rates and taxes are confirmed at checkout where applicable.
Germination Support
If seeds do not germinate under recommended conditions, contact us within 30 days with your order number and photos of your setup. We will review eligible claims and help with replacement guidance, store credit or next planting steps.
Germination SupportGuidance for strong, healthy growth.
U.S. SupportReal people, here to help you grow.
Secure CheckoutYour payment is safe and protected.
Shipping InfoShipping options are shown at checkout.

Customer Reviews

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

You May Also Like

Free Planting Guide

Tips for sowing, growing and enjoying your next seed order.

Read the Guide