• Large mature mammoth grey stripe sunflower head filled with seeds outdoors
  • Mammoth grey stripe organic sunflower head with developing seeds on a green backdrop
  • Large mature mammoth grey stripe sunflower filled with seeds on a bowl backdrop
  • Large sunflower head with grey-striped mammoth seeds against a sunset sky backdrop
  • Large mammoth grey stripe sunflower head in close-up on a bright natural backdrop
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Sunflower Seeds (Organic) - Mammoth Grey-Stripe

Our most popular cultivar for snacking is now certified organic

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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

  • Open Pollinated Seed
  • Organic Seed

LIGHT REQUIREMENT

  • Full Sun

BLOOM SEASON

  • Summer through Fall

GROWTH HABIT

  • Upright

PLANT HEIGHT

  • Up to 144 inches

PLANT TYPE

  • Giant
  • Single-Flowered

COLOR

  • Yellow

The most familiar and iconic of all the classic sunflowers, our Organic Mammoth Grey Stripe Sunflower seeds may look like the kind you can eat, but we think you'll find them much more rewarding when planted in a sunny location. These beautiful flowers live up to their name and can grow up to a towering 12 feet high with 10+ inch blooms!!

  • • Annual; A crowd favorite!
  • • Giant flowers with delicious seeds
  • • Prefers full sun exposure

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 45 Up to 10 Sq. Ft
1 Ounce 425 Up to 30 Sq. Ft
1/4 Pound 1,700 Up to 125 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

All sunflower
Grown by Our Community 

    Sunflower Seeds (Organic) - Mammoth Grey-Stripe FAQs

    What is Mammoth Grey-Stripe (Organic) Sunflower also known as?

    Mammoth Grey-Stripe (Organic) Sunflower is also known as Comb Flower, Golden Flower of Peru, and St. Bartholomew's Star.

    Customer Reviews

    Overall rating: 5.0 / 5 from 1 reviews.

    I've never ordered anything from Eden Brothers that wasn't above expectations. Thanks so much and once I get moved I'm planning on ordering many more things from you.

    Denise M. 5/5 Verified

    Sunflower Seeds (Organic) - Mammoth Grey-Stripe

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