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Sunflower (Mammoth)

$2.99 $1.50 50% off Botanical Interests and Lake Valley Seeds


Item # 736210103964

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Botanical Interests Mammoth Sunflower Seeds

This giant among sunflowers is a fast grower whose single stalk can reach 12 inches tall and produces one 10"-12" flower! Not fussy about soil, it's very easy to grow and drought tolerant. Grow in a tight row to make an attractive screen. Sow monthly for continual blooms into the fall. Edible, gray-striped seeds invite birds in the fall (if you don't eat the seeds first!). Edible, bittersweet petals make a sunny garnish on salads and appetizer plates. Attracts pollinators. 

Sowing Information:

  • Light: Full sun
  • When to Start Inside: 2 to 4 weeks before your average last frost date. Sunflowers are sensitive to root disturbance, sow in biodegradable pots that can be planted directly in the ground.
  • When to Sow Outside: RECOMMENDED. 1 to 2 weeks before your average last frost date.
  • Seed Depth: Plant 1/4 to 1/2 inches deep
  • Seed Spacing: A group of 3 seeds every 24”
  • Thinning: When 3" tall, thin to 1 every 24"
  • Bloom Period: Summer

Growing Notes:

  • Variety info: Flowers up to 12 inches wide with yellow petals and a brown center. Single type.
  • Harvesting: For the longest vase life, harvest in the morning.
  • Attributes: Attracts pollinators, good cut flower, deer resistant, heat tolerant, edible



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