Helianthus annuus
Helianthus annuus
Earn +3 points for this item with our rewards program.
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.
Full Sun
14 - 21 Days
18"+
84 -144"
Average (1 - 2 in / week)
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"
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.
Excellent for tall blooming backgrounds and screens for unsightly places. Harvest sunflower seeds by cutting flower heads when backs yellow, then hang downward.
Garden growing Quiz
Take our quiz to find the perfect plants and products for your location, skill level, and interests.
Find your best match in under 2 minutes!
Garden growing Quiz
Free Shipping on
Seed Only Orders!
There are a ton
of ways to earn!
Redeem points for
BIG savings!
