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Botanical Name: Helianthus annuus
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Common Name: Sunflower, Mammoth Grey Stripe
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Type: Annual—lives only one year. Grows quickly, blooms heavily, then dies with frost. Regrows strongly from seed dropped in fall.
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Color: Large yellow flowers
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Height: 96-144" tall (8-12' tall)
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Bloom Time: Days to germinate: 10-20 depending on soil and weather conditions. Days to maturity 100-110. (summer until frost)
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Flower: Average flower size is 10-15" but can reach up to 24" across.
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Soil Preferences: Sunflowers grow in almost any soil.
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Moisture Requirements: Average moisture, well drained. Heat and drought tolerant.
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Where To Grow It: All regions of North America
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Variety: Mammoth Grey Stripe
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Advantages: Edible seeds that attract birds.
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How To Grow It: One of the easiest plants in the world to grow from seed. Plant in spring after danger of frost is past. Can be distributed lightly into a meadow, or used as a solid wall or screen as a background.
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Indigenous To: Hybrid of the No. American native species
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