Mammoth Sunflower seeds are an easy to grow summer annual.
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?!
- Plant Type: Annual Flower
- Fill Weight (grams): 7
- Grows Best In: Full Sun
- Days to Germination: 14-21 Days
- Days To Bloom: 75-90 Days
- Planting Depth: 1"
- Seed Spacing: Sow Mammoth Sunflower seeds roughly 18"-24" apart.
- Growing Height: 7'-12'
Instructions: 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.
Suggestions: Excellent for tall blooming backgrounds and screens for unsightly places. Harvest sunflower seeds by cutting flower heads when backs yellow, then hang downward.