Mongolian Giant Organic

SKU: FL3901
Mongolian Giant sunflower seeds produce seriously tall plants with stems that grow up to 4.2m (14') in just four months. The huge flower heads are laden with seeds over 2cm (1") long - the longest of any sunflower seeds. Read More

Exposure Full-sun

Average Seeds Per Gram 7 ?

Mongolian Giant Organic has a rating of 4.4 stars based on 5 reviews.
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Attracts Pollinators Organic Canada Organic Certified
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West Coast Seeds ships anywhere in North America. However, we are not able to ship garlic, potatoes, asparagus crowns, bulbs, onion sets, Mason bee cocoons, or nematodes outside of Canada. We regret, we cannot accept returns or damages for orders outside of Canada. The minimum shipping charge to the US is $9.99.

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For every order online, we donate a pack of seeds to gardens and communities worldwide through our Seeds of Growth program, supporting sustainable growth and local food systems.

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Mongolian Giant Organic

Product Details


CERTIFIED ORGANIC! Mongolian Giant sunflower seeds produce seriously tall plants with stems that grow up to 4.2m (14') in just four months. The huge flower heads are laden with seeds over 2cm (1") long  - the longest of any sunflower seeds. The large edible seeds can be harvested and roasted or left for the birds to enjoy. Direct sow as early as possible, as soon as the soil warms up in spring.

Annual.

Quick Facts:

    • Large and edible seeds
    • Plants grow to 4.2m (14') tall
    • Benefits from staking
    • Great for competitions

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All About Mongolian Giant Organic

Latin

Latin
Helianthus annuus
Family: Asteraceae

Difficulty

Difficulty
Easy

Season & Zone

Season & Zone
Exposure: Full sun

Timing

Timing
Direct sow repeatedly after the last frost date. Starting indoors is possible, but does not gain much time. If sunflowers are allowed to get root-bound, they will lack stability at transplant time, and will require staking. Optimal soil temperature for germination: 21-30°C (70-85°F). Seeds should sprout in 10-14 days.

Starting

Starting
Sow seeds 5mm-1cm  (¼-½”) deep. Space dwarf varieties 15cm (6″) apart, but give the giants lots of room at 1m (3′) between plants.

Growing

Growing
To grow really big plants with really big flowers, enrich the soil with organic matter and incorporate 2 cups of balanced organic fertilizer per 3m (10′) of row, and irrigate regularly. When the plants are 30cm (12) tall, dissolve 5ml (1 tsp) of borax (for boron) in 350 ml (12 fl oz) of water and spread the solution over 5m (15′) of row. Be careful not to over-apply this solution. This application of boron will produce bigger seeds and flower heads. Do not apply boron to other garden plants. When the back of the flower head turns yellow, it is ready to be cut from the plant.

Companion Planting

Companion Planting
Sunflowers planted near rows of corn are said to increase yields. Sunflowers can be used to draw heavy metals, toxins, and even radiation from soil, but should be burned at the end of the season if grown for this purpose. Plant sunflowers amid squash plantings to improve pollination and overall production.

More on Companion Planting.

How to Grow Sunflowers

Step 1

Timing

Direct sow repeatedly after the last frost date. Starting indoors is possible, but does not gain much time. If sunflowers are allowed to get root-bound, they will lack stability at transplant time, and will require staking. Optimal soil temperature for germination: 21-30°C (70-85°F). Seeds should sprout in 10-14 days.

Step 2

Starting

Sow seeds 5mm-1cm  (¼-½”) deep. Space dwarf varieties 15cm (6″) apart, but give the giants lots of room at 1m (3′) between plants.

Step 3

Growing

To grow really big plants with really big flowers, enrich the soil with organic matter and incorporate 2 cups of balanced organic fertilizer per 3m (10′) of row, and irrigate regularly. When the plants are 30cm (12) tall, dissolve 5ml (1 tsp) of borax (for boron) in 350 ml (12 fl oz) of water and spread the solution over 5m (15′) of row. Be careful not to over-apply this solution. This application of boron will produce bigger seeds and flower heads. Do not apply boron to other garden plants. When the back of the flower head turns yellow, it is ready to be cut from the plant.

Tips

Companion Planting

Sunflowers planted near rows of corn are said to increase yields. Sunflowers can be used to draw heavy metals, toxins, and even radiation from soil, but should be burned at the end of the season if grown for this purpose. Plant sunflowers amid squash plantings to improve pollination and overall production.

Customer Reviews & Questions