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Helianthus annuus is commonly known as Sunflower. These giants of the flower garden are prized for their showy flower heads. This variety, Giant, has massive 10-inch double blooms. It is golden-yellow with dense petals all the way to the center. Sunflowers are great for the back of the flower border or next to outbuildings.
This sunflower giant grows up to 5 feet tall as an annual plant growing in USDA zones 3 - 9.
Plant a row of Sunflowers to create a temporary screen. Sow Sunflower seed directly outdoors after frost danger has passed. In a prepared seedbed that is weed-free, place 2 - 3 seeds per plant 12 inches apart and cover 1/2 inch deep with soil.
Keep the seed moist until germination occurs. With a temperature range of 69 – 75F, germination is usually within 15 days.
Thin seedlings to 24 inches apart. Grow Sunflowers in full sun and in moist, fertile and well-drained soil. Once they are established, Sunflowers are fairly drought tolerant.
Helianthus annuus is commonly known as Sunflower. These giants of the flower garden are prized for their showy flower heads. This variety, Giant, has massive 10-inch double blooms. It is golden-yellow with dense petals all the way to the center. Sunflowers are great for the back of the flower border or next to outbuildings. Plant a row of Sunflowers to create a temporary screen. Sow Sunflower seed directly outdoors after frost danger has passed. In a prepared seedbed that is weed-free, place 2 - 3 seeds per plant 12 inches apart and cover 1/2 inch deep with soil. Keep the seed moist until germination occurs. With a temperature range of 69 – 75F, germination is usually within 15 days. Thin seedlings to 24 inches apart. Grow Sunflowers in full sun and in moist, fertile and well-drained soil. Once they are established, Sunflowers are fairly drought tolerant.