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Mongolian Giant Sunflower Seeds

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Mongolian Giant Sunflowers

SKU: FL12-50

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Country Of Origin: USA USA

Availability: Out of stock

Price: $3.00

Your price: $2.50

Overview
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90 days. Annual. Helianthus annuus. Open Pollinated. Mongolian Giant Sunflower. The plant produces heavy amounts of large 1 ½" long sunflower seeds. They are great for eating. The yellow flowers are enormous, grow 18" across, and yield a lot of seeds. The plants grow 14 ft tall. It is one of the tallest sunflowers known to exist. When the backs turn yellow, cut the flower, and let it dry upside down. For high wind regions, it is recommended to stake the plants to protect them from wind damage. Easy for kids to grow. Great for school projects. It makes an interesting focal point in beds and borders. An heirloom variety from the USA.

Lot No: 102598

Germination: 85%

Test Date: 08/2025

Seeds Per Pound: 4,500

Plant Height: 14 ft tall

Bloom Season: Summer/Fall

Sunlight Requirement: Full Sun

Planting Method: Direct sow as early as possible, as soon as the soil warms up in spring.

Annuals Flowers

Seed Depth

Soil Temp. for Germination

Days to Germination

Sunlight Requirements

Planting Time

1/4 to 1/2"

70 F to 85 F

7 to 14 days

Partial Shade/Full Sun

Spring

USDA Hardiness Zone

Seed Spacing

Row Spacing

Space After Thinning

Days to Harvest

N/A

12 - 36"

6 to 24"

45 - 100 days

Annual Flowers Planting Information:

Annual flowers do best when planted indoors and transplanted outdoors when the danger of frost has passed. Plant your seeds indoors 5 to 7 weeks before setting them outside. For tiny seeds, do not cover with seed starting mix. Just sprinkle the seeds on top. Transplant them outside in the garden when the seedlings are established. Plants can grow 1 - 3 ft tall.

Soil Requirements:

Requires rich, fertile soil in a well-drained location in the garden. Apply mulch, grass clippings, or straw around the base of the plant.

Water Requirements:

Water well during dry and hot spells.

Fertilizer Requirements:

Use Slow Release (6 Month) Fertilizer when planting outdoors. Periodically apply Miracle-Gro.

Harvest Tips:

Snip the stems with garden scissors when the flowers are in full color.

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Reimer seeds has over 5,000 quality vegetable, flower, and herb seeds for the home gardener and market growers. We do not sell any Genetically Modified seeds. This year we reduced our prices on many items, added new items, and have added additional bulk items by the ounce and pounds! Take time to review our impressive Online Seed Catalog. Sorry, we do not have a printed catalog to mail you. Plan your garden, and then order your varieties for this upcoming season. Please check back often, as we add new items regularly. If you don’t see an item you want you can always email us and we’ll see if we can bring it into stock!