American Giant, (F1) Sunflower Seeds

Key Attributes

Sun: Full Sun
Packet: 50 Seeds
Days To Maturity (# Days)
Days To Maturity (# Days): 55
Botanical Name
Botanical Name: Helianthus annuus

American Giant, (F1) Sunflower Seeds

American Giant F1 pushes the label of “giant” to new frontiers in sunflower gardening. The American Giant is a quite large sunflower, really it is huge sunflower. Almost everybody saves a corner of the garden to pull out all the stops and grow a giant sunflower specimen using all their fertilizer and watering tricks. American Giant Hybrid was developed especially to respond to your best gardening efforts. It is a huge (and we mean, huge) improvement on the old garden varieties that you nursed along in the garden only to see them fall to the ground with the first big wind after flowering. American Giant Hybrid grows tall and stays standing long after the others fall. In fact, you may have to literally get out a saw and cut it down at the end of the year. Or leave it through the winter for the birds and squirrels to enjoy the seeds and to remind your neighbors of your gardening prowess. Don’t believe that the American Giant is a huge sunflower? We have seen it grow as tall as 17 feet! Now, that is a large sunflower.
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Key Attributes

Sun: Full Sun
Packet: 50 Seeds
Days To Maturity (# Days)
Days To Maturity (# Days): 55
Botanical Name
Botanical Name: Helianthus annuus

Product Details



Plant Height


Botanical Name

Helianthus annuus

Flower Height


Seed Type


Additional Characteristics

Single Stem

Seeds Per Gram


Seeds Per Pound



50 Seeds

Sow Depth


Seeds Per Ounce



F1 Hybrid


Full Sun


Cut Flowers

Life Cycle


Sow Method

Direct Sow



Days To Maturity (# Days)


Seeds Per Acre

6 lbs


Growing Instructions

    Learning Download: How to Grow Sunflowers

Sunflowers are one of the easiest flowers to grow from seed. Sunflowers grow wonderfully along a border and are a good option to grow with children.

Before Planting: Sunflowers are very tough and can grow in nearly any soil, but prefer full sun.

Planting: Sunflower seeds do best when planted directly into the garden after the last frost date has passed. Plant seeds 6 inches apart and 1 inch deep in a shallow trench.

Watering: Sunflowers need water the most during their growth period, which is 20 days before and after flowering.

Fertilizer: Sunflowers typically do not require fertilizing because they grow so easily, but a slow-release granular fertilizer can be added to poorer soils as the better the soil, the bigger the flowers will grow.

Days to Maturity: Sunflowers bloom around 120 days

Harvesting: In addition to storing the flowers in a vase to lighten up a room, Sunflower seedlings can be harvested once the flowers are done blooming and have spread their for culinary use.

Tips: Do not grow Sunflowers near potatoes or pole beans, as their leaves, seeds and stems emit a substance that inhibits some other plant’s growth.

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Our Seed Promise

"Agriculture and seeds" provide the basis upon which our lives depend. We must protect this foundation as a safe and genetically stable source for future generations. For the benefit of all farmers, gardeners and consumers who want an alternative, we pledge that we do not knowingly buy or sell genetically engineered seeds or plants.

The mechanical transfer of genetic material outside of natural reproductive methods and between genera, families or kingdoms, poses great biological risks as well as economic, political, and cultural threats. We feel that genetically engineered varieties have been insufficiently tested prior to public release. More research and testing is necessary to further assess the potential risks of genetically engineered seeds. Further, we wish to support agricultural progress that leads to healthier soils, to genetically diverse agricultural ecosystems, and ultimately to healthy people and communities.

To learn more about the "Safe Seed Pledge" please visit