Sunflower, Mammoth Seeds

Helianthus annuus

Regular price $2.99
Regular price Sale price $2.99
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Sunflower, Mammoth Seeds

Helianthus annuus

Regular price $2.99
Regular price Sale price $2.99
Sale Sold out

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Product Information Chevron Down Chevron Forward

Mammoth Sunflower seeds are an easy to grow summer annual.

They quickly mature in full sun and are beneficial for pollinators in your garden.

Mammoth Sunflower seeds provide lasting beauty and enjoyment for a full season. Under the right conditions these sunflower seeds should germinate in 14 - 21 days and reach maturity in 75 - 90 days. When mature, this flower has an enormous head, measuring more than 1 foot across! First it provides spectacular yellow beauty to your garden, then it gives you seeds for roasting and eating. What more could you ask for?!

Visit this link to learn more about growing your very own sunflower garden.

Sku: 6544

Vendor: Ferry-Morse

Common Name: Sunflower

Growing Information Chevron Down Chevron Forward
Safe for bees

for Bees

Good For Pollinators

Good For Pollinators

Grows best In

Best In:

Full Sun


Days to

14 - 21 Days


Container Size:



Growing Height:

84 -144"

water Needs


Average (1 - 2 in / week)

Key Features Chevron Down Chevron Forward

Characteristics: Attracts Butterflies, Pollinators, Songbirds, and Specialized Bees, Pet Friendly

Botanical Name: Helianthus annuus

Approximate Number of Seeds Per Packet: 70

Plant Type: Flower

Plant Lifecycle: Annual

Pelleted Seed Count: 10 - 50

Fill Weight (grams): 5

Days To Bloom: 75 - 90 Days

Landscape Use: Bedding

Disease Resistance: Deer Resistance|Dry Soil|Poor Soil

Tolerance: Drought Tolerant

Growing Season(s): Spring|Summer

Harvest/Bloom Season(s): Summer

Package Dimensions: 3.25 x 4.5"

Instructions Chevron Down Chevron Forward

After all danger of frost, sow Mammoth Sunflower seeds in open ground well exposed. Cover with 1" of soil. When plants are 4" tall, thin. Needs lots of water.

Planting Depth: 1"

Seed Spacing: Sow Mammoth Sunflower seeds roughly 18 - 24" apart.

Nutrient Care Instructions: Apply SUPERthrive once per week. Soak in solution of 1/4 tsp per gal for 15 min. or longer depending on size and type.

Suggestions Chevron Down Chevron Forward

Excellent for tall blooming backgrounds and screens for unsightly places. Harvest sunflower seeds by cutting flower heads when backs yellow, then hang downward.

At Ferry Morse, we are proud of our non-GMO & guaranteed fresh seeds.

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