Sunflower - Mammoth Grey Stripe

Mammoth Grey Stripe Sunflowers are the iconic giant sunflower. Reaching up to 144 inches tall, these sunflowers are impossible to miss in the garden. Great for harvesting seeds! About 50 seeds

Life Cycle: Annual

When: Direct sow 1 - 2 weeks after your last average frost date

Sun: Full Sun

Depth: 1/2 inch

Spacing: 12 - 18 inches

Germination: 10 - 15 days

Size: Up to 144 inches

Maturity: 70 - 100 days