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No, the sunflower (Helianthus annuus) can grow just about anywhere as long as it has full sun (at least 6hr/day), well drained soil and they like to have mulch to conserve water and increase the organic content of the soil. They do like soil with a rich organic content. Some references say sunflowers prefer a limey soil, but I've grown them for years in an acidic location and they do just fine.

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11y ago

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Grow in moderately fertile, humus rich, moist but well drained, neutral to alkaline soil in full sun. They need long, hot summers to flower well.

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13y ago
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sunflowers need water and sunlight well i dont know the answer i just like typing :))

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12y ago
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