Soil: rich, well-drained soil.
Sow seeds: after risk of frost has passed.
Okay soil temperature: 55°F (13°C) or warmer.
Ideal soil temperature: 70° to 75°F (21° to 25°C).
Sowing instructions: check your seed packet.
Usually 1-inch deep, spacing seeds 6 to 36 inches, depending on variety.
Germination: 2 to 10 days.
Days to maturity: 80 to 120 days.
Container growing: yes, best for smaller, dwarf varieties.
Fertilizer: amend soil with good compost. Can also use granular, slow-release fertilizer as directed on product label.
Growing zones: Sunflowers are native to North America and can be grown as annuals everywhere from Alaska to Mexico.

Sizes range from dwarf types (1 to 2-feet tall) to mammoths (8 to 15 feet). The world record for sunflower height is currently 30 feet!
Flower sizes can be a few inches and up to 20-inches in diameter.
Flower colors: white, pale yellow, yellow, bright yellow, orange, bronze, rust, dark red, and bi-colored varieties.
Appearance and texture: long petals, short petals, fluffy, elongated….
Formation: single flower heads, multi-flower heads.
Cut flowers: there are pollen-free types intended for cut flowers.
Seeds: check the seed packet to know whether the plant will produce seeds and if they can be saved for sowing. Some hybrids are sterile.
If you live in a cold climate, choose varieties that grow from seed to maturity in the number of days available between last frost in spring and first frost in fall.
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