Sunflower, Mammoth Grey


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Grow tall and snack well with the Mammoth Grey Sunflower. Its bright yellow petals will bring joy to any garden, and its towering height makes it stand out among other sunflower varieties. Plus, its nutritious seeds are perfect for satisfying your cravings.

How to Grow Mammoth Grey Sunflowers

  • Latin Name: Helianthus annuus
  • Annual
  • Days to Maturity: 85-105
  • Hardiness Zone: 2-11
  • Temperature: Warm
  • Light Preference: Full sun
  • Planting:
    • Depth: 1/2"
    • Plant Space: 1-2'
    • Row Spacing: 2'-3'
  • Pests/disease: caterpillars, beetles, fungal spots, mildew
  • Seed Count:
    • 1oz- Approximately 350 Seeds
    • 4oz- Approximately 1,450 Seeds
    • 1lb- Approximately 6,000 Seeds

Mammoth Grey Sunflower is recommended for outdoor growth, considering its 12' bloom. To ensure the best growth, soil must be rich and well-drained with full sunlight. Sunflowers are a great addition to the garden and especially attractive to pollinators.