• Person holding a giant mongolian giant sunflower bloom to show size in a sunflower field.
  • Large vibrant yellow mongolian giant sunflower head on a green leafy garden backdrop
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Sunflower Seeds - Mongolian Giant

The largest sunflower in the world

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About the Variety

Key Features

Heat Tolerant
Drought Tolerant
Attracts Bees
Attracts Butterflies
Fast Growing
Easy to Grow
Perfect for Cut Flowers
Perfect for Borders
Perfect for Dried Flowers
Perfect for Xeriscaping
Edible
Reduces Erosion
Microgreens
North American Native Cultivar

Plant Details

BOTANICAL NAME

Helianthus annuus

LIFE CYCLE

  • Annual

SEED TYPE

  • Heirloom Seed
  • Open Pollinated Seed

LIGHT REQUIREMENT

  • Full Sun

BLOOM SEASON

  • Summer through Fall

GROWTH HABIT

  • Upright

PLANT HEIGHT

  • Up to 200 inches

PLANT TYPE

  • Giant
  • Single-Flowered

COLOR

  • Yellow

Enormous sunflower variety, with vibrant yellow flower heads that can get as large as 18 inches across and heights up to 14 feet! Once the blooms fade, you and the birds will be rewarded with enough seeds to snack on all year!

  • • Extra tall-growing annual with huge blooms
  • • Heirloom variety with massive Summer blooms
  • • Thrives in bright, sunny growing areas

Planting Information

PLANTING SEASON

  • Spring

SOWING METHOD

  • Direct Sow

PLANTING DEPTH

  • 1/2 inch

WATER NEEDS

  • Average

PLANT SPACING

  • 8 to 12 inches

HARDINESS ZONES

  • N/A - Annual

COVERAGE

Amount Avg Seed Count Recommended Coverage
Packet 20 Up to 10 Sq. Ft
1 Ounce 189 Up to 30 Sq. Ft

Planting Guide

View our Sunflower Planting Guide to learn more.

Ready to Grow

We guarantee that our seeds & bulbs will be true to type and ready to thrive. If something doesn't grow as expected, we will make it right. Questions? Call us at 855-440-2929

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    Sunflower Seeds - Mongolian Giant FAQs

    What is Mongolian Giant Sunflower also known as?

    Mongolian Giant Sunflower is also known as Comb Flower, Golden Flower of Peru, and St. Bartholomew's Star.

    Customer Reviews

    Overall rating: 3.3 / 5 from 3 reviews.

    Customer photo review of Sunflower Seeds - Mongolian Giant

    Zone 4-5 clay soil thats been amended. Had almost 100% germination. A Cheyenne spirit variety snuck its way into the package but that grew as well. A couple grew abnormaly with multiple heads but I thought that looked kind of neat anyway and these definitely grow at different rates. I had a couple shoot up to 7 feet bloom and get there seed heads and die off while this other one a few feet away has just been slowly growing taller and taller 7 feet now and its just starting to bud out a little bit. Overall very happy.

    Dx 5/5 Verified

    Sunflower Seeds - Mongolian Giant

    Customer photo review of Sunflower Seeds - Mongolian Giant

    Really disappointed that this isn't the variety I ordered. It's the second time it's happened to me when ordering flower seeds from Eden Brothers. This was supposed to be a memorial Mongolian Giant in honor of my dog who passed suddenly. Looks like it's just your average sunflower, as it's stopped growing.

    Elaina 1/5 Verified

    Sunflower Seeds - Mongolian Giant

    Store owner replied: Hello, Elaina Thank you for your review of Eden Brothers! We greatly appreciate you bringing this to our attention. It's so important to have feedback like this so we can continually improve our products and processes. After speaking with our Customer Service Team, it seems we were able to resolve this for you. Thanks for your time in sharing your experience with us!

    I highly recommend eden brother's. However, this year my sunflowers haven't bloomed at all. My bee balm on the other hand is robust

    Kim K. 4/5 Verified

    Sunflower Seeds - Mongolian Giant

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