The Mongolian Giant sunflower is the largest sunflower in the world, reaching toward the sky at a height of up to 14 feet with enormous blooms up to 18 inches across! Just one vibrant yellow flower will produce a bumper crop of sunflower seeds!

Sun exposure:

• partial to full sun

Soil pH:

• 6.6 to 8.4 (tolerates a wide range of soil conditions)

Hardiness zones:

• 1 to 10

Spacing:

• 12 to 24 inches

Moisture:

• 1 inch per week

Notes:

• direct sow
• heirloom seed
• attracts pollinators

Do you grow Mongolian Giant sunflowers? Do they thrive in your climate? Please tell us about your Mongolian Giant sunflowers.