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How to Water Sunflowers

Native to the American plains, the sunflower is second only to soybeans as a worldwide commercial oilseed crop. But practicality is not the only reason Americans love sunflowers. Many sunflowers bloom atop towering stalks that reach heights of 15 feet or more, while dwarf varieties reach heights less that 24 inches. Available in a range of colors from the traditional sunshine yellow surrounding a dark center, to golden-orange, red and mahogany, sunflowers add depth and color to a landscape. Many gardeners grow sunflowers for the sheer joy of watching these stately flowers follow the sun's path across the sky and settle in for the night.

Things You'll Need

  • Watering can
  • Hose
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    • 1

      Water sunflowers when the soil feels dry 1 inch below the surface of the soil. Insert a finger into the soil to assess the moisture level. Early morning watering is recommended, as it provides the plants with moisture before the heat of the day arrives.

    • 2

      Water thoroughly to moisten the soil to the root level once or twice a week. Sunflowers prefer 1 inch of rain a week. If rain is insufficient, supplemental watering is necessary to promote healthy growth.

    • 3

      Check the soil often for signs of drying. During hot dry spells, soil dries quickly and the sunflowers may require more frequent watering. Those grown in containers or raised beds may require daily watering, as soil in containers dries quickly in the summer sun.