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What do sunflowers grow fastest in?

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Anonymous

12y ago
Updated: 8/16/2019

A sunflower (Helianthus annuus) grows fastest when given full sun (min. 6 hours per day), adequate water, and lots of organic material in the soil. In fact, adding mulch to conserve water and add nutrients to the underlying soil is an excellent idea when it comes to feeding a sunflower plant.

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Wiki User

12y ago

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