Mammoth Grey Stripe sunflowers are probably the most iconic of all tall sunflowers, producing the delicious grey and white striped seeds that may take you back to your childhood. These sunflowers are very popular with gardeners, including those in the younger set. This sunflower is also known as Comb Flower Mammoth Grey Stripe, Golden Flower of Peru Mammoth Grey Stripe, and St. Bartholomew’s Star Mammoth Grey Stripe.

Sun exposure:

• full sun

Soil pH:

• 6.0 to 6.8

Hardiness zones:

• 1 to 10

Spacing:

• 12 to 18 inches

Moisture:

• 1 inch per week

Notes:

• direct sow
• grows up to 12 feet tall
• flower diameters can reach 10 inches
• attracts bees, butterflies, and other pollinators

Do you grow Mammoth Grey Stripe sunflowers? If so, please tell us your top tips for ensuring towering flowers.