Giant Flower Heads
Produces impressive golden-yellow flower heads that create a striking display in gardens and outdoor spaces.
Mammoth Sunflower Seeds for Sale
Suitable for home gardening use
Regular price
Rs. 16.99 INR
Sale price
Rs. 16.99 INR
Regular price
Tax included.
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Estimated Delivery:Nov 21 - Nov 25
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Product description
Mammoth Sunflower Seeds
Mammoth Sunflower (Helianthus annuus) is a popular giant flowering variety known for its towering stems, large golden-yellow flower heads, and abundant edible seeds. It is commonly grown in home gardens, flower beds, and open landscapes. This sun-loving annual thrives in warm conditions with fertile, well-drained soil and plenty of sunlight.
Giant Sunflower
Golden Yellow Blooms
Edible Seeds
Pollinator Friendly
Key Features
Tall Growth Habit
Develops tall, sturdy stems that can reach several feet in height under favorable growing conditions.
Large Edible Seeds
Produces striped sunflower seeds that can be harvested when mature and fully dried.
Attracts Pollinators
Large flower heads provide nectar and pollen for bees and other beneficial garden visitors.
Product Highlights
Scientific name: Helianthus annuus
Classic giant sunflower variety
Bright golden-yellow petals
Large central flower heads
Can produce edible sunflower seeds
Tall and upright growth habit
Suitable for outdoor gardens
Attracts bees and pollinators
Specifications
| Scientific Name | Helianthus annuus |
| Common Name | Mammoth Sunflower; Giant Sunflower |
| Plant Family | Asteraceae |
| Seed Type | Flower Seeds |
| Plant Type | Annual Flowering Plant |
| Flower Color | Golden Yellow with Dark Brown Center |
| Growth Habit | Tall, Upright, and Sturdy |
| Plant Height | Approximately 8–12 feet, depending on conditions |
| Flower Head Size | Can reach approximately 10–14 inches across |
| USDA Hardiness Zones | Grown as an annual in USDA Zones 2–11 |
| Planting Season | Spring to early summer after the last frost |
| Germination Time | Approximately 7–14 days |
| Germination Temperature | Approximately 70–85°F (21–29°C) |
| Sunlight | Full Sun |
| Soil Requirements | Fertile, Moisture-Retentive, Well-Drained Soil |
| Watering | Regular watering, especially during establishment |
| Days to Maturity | Approximately 80–100 days |
| Plant Spacing | Approximately 18–24 inches |
| Uses | Ornamental Gardens, Cut Flowers, and Seed Harvesting |
Growing Guide
Step 1: Select a Sunny Location
Choose an open planting area that receives at least 6–8 hours of direct sunlight daily. Select a location with enough vertical space for tall sunflower growth.
Choose an open planting area that receives at least 6–8 hours of direct sunlight daily. Select a location with enough vertical space for tall sunflower growth.
Step 2: Prepare the Soil
Loosen the soil and remove weeds and debris. Improve the planting area with organic matter if needed to support healthy root development.
Loosen the soil and remove weeds and debris. Improve the planting area with organic matter if needed to support healthy root development.
Step 3: Sow the Seeds
Sow sunflower seeds approximately 1 inch deep in the soil. Space plants about 18–24 inches apart and cover lightly with soil.
Sow sunflower seeds approximately 1 inch deep in the soil. Space plants about 18–24 inches apart and cover lightly with soil.
Step 4: Water Regularly
Water after planting and maintain consistent soil moisture during germination. Established plants need regular watering, especially during dry weather.
Water after planting and maintain consistent soil moisture during germination. Established plants need regular watering, especially during dry weather.
Step 5: Support Tall Plants
Monitor plant growth and provide staking in windy locations if necessary. Keep the surrounding area free from weeds.
Monitor plant growth and provide staking in windy locations if necessary. Keep the surrounding area free from weeds.
Step 6: Harvest Mature Seeds
Allow the flower head to mature until the back turns yellow or brown and the seeds become developed. Harvest and dry the seeds before storage or use.
Allow the flower head to mature until the back turns yellow or brown and the seeds become developed. Harvest and dry the seeds before storage or use.
Grow Giant Blooms with Mammoth Sunflower Seeds
Bring impressive height and bright golden-yellow flowers to your garden with Mammoth Sunflowers. These giant annual plants are suitable for sunny garden spaces and can produce large seed heads when grown with proper sunlight, soil, and watering. Enjoy their ornamental beauty and harvest mature sunflower seeds at the end of the growing season.
Frequently Asked Questions
Find helpful answers about Mammoth Sunflower height, seed harvesting, and growing requirements.
How tall do Mammoth Sunflowers grow?
Mammoth Sunflowers commonly grow approximately 8–12 feet tall under favorable conditions, although height varies with soil quality, sunlight, watering, and seed variety. Plant them in an open, sunny location with enough space for their tall stems and large flower heads.
How do you harvest seeds from Mammoth Sunflowers?
Allow the flower head to mature until its back turns yellow or brown and the seeds become plump. Cut the flower head with a section of stem attached and allow it to dry in a well-ventilated, protected location. Once dry, remove the seeds and store them in a cool, dry place.
Do Mammoth Sunflowers need staking to prevent falling over?
Mammoth Sunflowers can develop tall stems and heavy flower heads, making them vulnerable to strong winds. Staking may be helpful in exposed or windy locations. Planting in a sheltered area, maintaining healthy roots, and providing adequate spacing can also help support stable growth.