Botanical Interests Sunflower Mammoth Seeds

This giant among sunflowers is a fast grower whose single stalk can reach 12' 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 bloom.

Up to 12"-wide flowers with yellow petals and a brown center. Single type.

• Family: Asteraceae
• Type: Sunflower
• Native: North America
• Hardiness: Annual
• Exposure: Full Sun
• Bloom Period: Summer to Frost
• Plant Dimensions: 6'-12' Tall
• Attributes: Attracts Pollinators, Cut Flower, Drought Tolerant, Heat Tolerant, Edible Flower

Recommended 1 to 2 weeks after your average last frost date.

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.

• Seed Depth: 1/4"-1/2"
• Seed Spacing: A Group of 3 Seeds Every 24"
• Seed Depth: 1/4"-1/2"
• Thinning: When 3" Tall, Thin To 1 Every 24"

Seeds are ready to harvest when the back of the head has dried and turned brown, about 4 weeks after the flowers have been pollinated. Petals will have wilted and fallen off and the seeds will be plump and colored white with gray/black stripes. Seeds ripen around the outside of the flower first; the ones in the center will ripen last. Average yield is approximately 1 lb per head.

• Type: Conventional Heirloom